<Page> Exhibit 1.1 DigitalNet Holdings, Inc. [_________] Shares(1) Common Stock ($0.001 par value) Underwriting Agreement New York, New York , 2003 Citigroup Global Markets Inc. 388 Greenwich Street New York, New York 10013 UBS Securities LLC 299 Park Avenue New York, NY 10071 As Representatives of the several Underwriters, Ladies and Gentlemen: DigitalNet Holdings, Inc., a corporation organized under the laws of Delaware (the "Company"), proposes to sell to the several underwriters named in Schedule I hereto (the "Underwriters"), for whom you (the "Representatives") are acting as representatives, [_________] shares of Common Stock, $0.001 par value ("Common Stock") of the Company (said shares to be issued and sold by the Company being hereinafter called the "Underwritten Securities"). The Company also proposes to grant to the Underwriters an option to purchase up to [_________] additional shares of Common Stock to cover over-allotments (the "Option Securities"; the Option Securities, together with the Underwritten Securities, being hereinafter called the "Securities"). Certain terms used herein are defined in Section 17 hereof. 1. REPRESENTATIONS AND WARRANTIES. The Company represents and warrants to, and agrees with, each Underwriter as set forth below in this Section 1. (a) The Company has prepared and filed with the Commission a registration statement (file number 333-107764) on Form S-1, including a related preliminary prospectus, for registration under the Act of the offering and sale of the Securities. The Company may have filed one or more amendments thereto, - -------------- (1) Plus an option to purchase from the Company, up to [_______] additional Securities to cover over-allotments. <Page> 2 including a related preliminary prospectus, each of which has previously been furnished to you. The Company will next file with the Commission either (1) prior to the Effective Date of such registration statement, a further amendment to such registration statement (including the form of final prospectus) or (2) after the Effective Date of such registration statement, a final prospectus in accordance with Rules 430A and 424(b). In the case of clause (2), the Company has included in such registration statement, as amended at the Effective Date, all information (other than Rule 430A Information) required by the Act and the rules thereunder to be included in such registration statement and the Prospectus. As filed, such amendment and form of final prospectus, or such final prospectus, shall contain all Rule 430A Information, together with all other such required information, and, except to the extent the Representatives shall agree in writing to a modification, shall be in all substantive respects in the form furnished to you prior to the Execution Time or, to the extent not completed at the Execution Time, shall contain only such specific additional information and other changes (beyond that contained in the latest Preliminary Prospectus) as the Company has advised you, prior to the Execution Time, will be included or made therein. (b) On the Effective Date, the Registration Statement did or will, and when the Prospectus is first filed (if required) in accordance with Rule 424(b) and on the Closing Date (as defined herein) and on any date on which Option Securities are purchased, if such date is not the Closing Date (a "settlement date"), the Prospectus (and any supplements thereto) will, comply in all material respects with the applicable requirements of the Act and the rules thereunder; on the Effective Date and at the Execution Time, the Registration Statement did not or will not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary in order to make the statements therein not misleading; and, on the Effective Date, the Prospectus, if not filed pursuant to Rule 424(b), will not, and on the date of any filing pursuant to Rule 424(b) and on the Closing Date and any settlement date, the Prospectus (together with any supplement thereto) will not, include any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; PROVIDED, HOWEVER, that the Company makes no representations or warranties as to the information contained in or omitted from the Registration Statement, or the Prospectus (or any supplement thereto) in reliance upon and in conformity with information furnished in writing to the Company by or on behalf of any Underwriter through the Representatives specifically for inclusion in the Registration Statement or the Prospectus (or any supplement thereto). (c) DigitalNet Holdings, Inc., DigitalNet, Inc. and DigitalNet Government Solutions, LLC conduct all of the Company's business. HFS GmbH, a German GmbH (i) is not a party to any indenture, contract, lease, mortgage, deed of trust, note agreement, loan agreement or other agreement, obligation, condition, covenant or instrument necessary to the conduct of the Company's business, (ii) does not possess any licenses, certificates, permits or <Page> 3 other authorizations necessary to the conduct of the Company's business and (iii) does not own any Intellectual Property (as defined below). (d) Each of the Company and its subsidiaries has been duly incorporated or organized and is validly existing as a corporation or limited liability company and is, other than HFS GmbH, in good standing under the laws of the jurisdiction in which it is chartered or organized, with full corporate power, or, in the case of DigitalNet Government Solutions, LLC, limited liability company power, and authority to own or lease, as the case may be, and to operate its properties and conduct its business as described in the Prospectus, and is duly qualified to do business as a foreign corporation or limited liability company and is in good standing under the laws of each jurisdiction which requires such qualification, except where the failure to be so qualified would not have a Material Adverse Effect. (e) All the outstanding shares of capital stock of each subsidiary that is a corporation have been duly and validly authorized and issued and are fully paid and nonassessable; all outstanding membership interests of each subsidiary that is a limited liability company were issued in conformity with the Delaware Limited Liability Company Act; and, except as otherwise set forth in the Prospectus with respect to the pledge of substantially all of the Company's assets as security under a credit agreement, all outstanding shares of capital stock or membership interests of the subsidiaries are owned by the Company either directly or through wholly owned subsidiaries free and clear of any perfected security interest or any other security interests, claims, liens or encumbrances. (f) The Company's authorized and outstanding equity capitalization is as set forth in the Prospectus; the capital stock of the Company conforms in all material respects to the description thereof contained in the Prospectus; the outstanding shares of Common Stock have been duly and validly authorized and issued and are fully paid and nonassessable; the Securities being sold hereunder by the Company have been duly and validly authorized, and, when issued and delivered to and paid for by the Underwriters pursuant to this Agreement, will be fully paid and nonassessable; the Securities being sold hereunder by the Company are duly listed for quotation, and admitted and authorized for trading, subject to official notice of issuance and evidence of satisfactory distribution, on the Nasdaq National Market the certificates for the Securities are in valid and sufficient form; the holders of outstanding shares of capital stock of the Company are not entitled to preemptive or other rights to subscribe for the Securities; and, except as set forth in the Prospectus, no options, warrants or other rights to purchase, agreements or other obligations to issue, or rights to convert any obligations into or exchange any securities for, shares of capital stock of or ownership interests in the Company are outstanding. (g) There is no franchise, contract or other document of a character required to be described in the Registration Statement or Prospectus, or to be filed as an exhibit thereto, which is not described or filed as required; and the <Page> 4 statements in the Prospectus under the headings "Risk Factors - We Derive Significant Revenues From Contracts Awarded Through a Competitive Procurement Process, Which Can Impose Substantial Costs Upon Us, and Negatively Impact Our Operating Results," "Risk Factors - Federal Government Contracts Contain Provisions Giving Government Clients a Variety of Rights That Are Unfavorable to Us, Including the Ability to Terminate a Contract at Any Time for Convenience," "Government Contracting and Regulatory Process," "Management's Discussion and Analysis of Financial Condition and Results of Operations - Senior Credit Facility," "Management's Discussion and Analysis of Financial Condition and Results of Operations - Bridge Loan Agreement," "Management - Employment Agreements," "Management - Severance Plan," "Management - Short-term Incentive Plan," "Management - Employee Benefit Plans," "Certain Relationships and Related Transactions," "Description of Certain Indebtedness - Current Credit Facility," and "Description of Certain Indebtedness - 9% Senior Notes due 2010" insofar as such statements summarize legal matters, agreements, documents or proceedings discussed therein, fairly and accurately summarize in all material respects such legal matters, agreements, documents or proceedings. (h) This Agreement has been duly authorized, executed and delivered by the Company and constitutes a valid and binding obligation of the Company enforceable in accordance with its terms. (i) The Company is not and, after giving effect to the offering and sale of the Securities and the application of the proceeds thereof as described in the Prospectus, will not be an "investment company" as defined in the Investment Company Act of 1940, as amended. (j) No consent, approval, authorization, filing with or order of any court or governmental agency or body is required in connection with the transactions contemplated herein, except such as have been obtained under the Act and such as may be required under the blue sky laws of any jurisdiction in connection with the purchase and distribution of the Securities by the Underwriters in the manner contemplated herein and in the Prospectus. (k) Neither the issue and sale of the Securities nor the consummation of any other of the transactions herein contemplated nor the fulfillment of the terms hereof will conflict with, result in a breach or violation or imposition of any lien, charge or encumbrance upon any property or assets of the Company or any of its subsidiaries pursuant to, (i) the charter or by-laws of the Company or any of its subsidiaries, (ii) the terms of any indenture, contract, lease, mortgage, deed of trust, note agreement, loan agreement or other agreement, obligation, condition, covenant or instrument to which the Company or any of its subsidiaries is a party or bound or to which its or their property is subject, or (iii) any statute, law, rule, regulation, judgment, order or decree applicable to the Company or any of its subsidiaries of any court, regulatory body, administrative agency, governmental body, arbitrator or other authority having jurisdiction over the Company or any of its subsidiaries or any of its or their properties, except, in the case of clauses (ii) <Page> 5 and (iii) above, for such conflicts, breaches, violations or impositions that would not have a Material Adverse Effect. (l) Other than pursuant to the Amended and Restated Stockholders Agreement, dated as of November 26, 2002, by and among DigitalNet Holdings, Inc., GTCR Fund VII, L.P., GTCR Co-Invest, L.P., the Pearlstein Family, LLC, the Ian Z. Pearlstein 2001 Trust, the Ivanna V. Pearlstein 2001 Trust, the J. Sunny Bajaj Trust, the Rueben Bajaj Trust, the Bajaj Family Limited Partnership, Ken S. Bajaj, Jack Pearlstein, Steven Hanau, Steve Solomon, Barbara Barnes, GetronicsWang Co. LLC, and Banc of America Mezzanine Capital LLC, no holders of securities of the Company have rights to the registration of such securities under the Registration Statement. (m) The historical financial statements and schedules of the Company and its consolidated subsidiaries and DigitalNet Government Solutions LLC, a Delaware limited liability company ("DGS"), included in the Prospectus and the Registration Statement present fairly in all material respects the financial condition, results of operations and cash flows of the Company and DGS as of the dates and for the periods indicated, comply as to form in all material respects with the applicable accounting requirements of the Act and have been prepared in conformity with generally accepted accounting principles applied on a consistent basis throughout the periods involved (except as otherwise noted therein). The selected financial data set forth under the caption "Selected Consolidated Financial Data" in the Prospectus and Registration Statement present fairly in all material respects, on the basis stated in the Prospectus and the Registration Statement, the information included therein. The pro forma consolidated statement of operations included in the Prospectus and the Registration Statement includes assumptions that provide a reasonable basis for presenting the significant effects directly attributable to the transactions and events described therein, the related pro forma adjustments give appropriate effect to those assumptions, and the pro forma adjustments reflect the proper application of those adjustments to the historical financial statement amounts in the pro forma consolidated statement of operations included in the Prospectus and the Registration Statement. The pro forma consolidated statement of operations included in the Prospectus and the Registration Statement comply as to form in all material respects with the applicable accounting requirements of Regulation S-X under the Act and the pro forma adjustments have been properly applied to the historical amounts in the compilation of those statements. (n) No action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company or any of its subsidiaries or its or their property is pending or, to the knowledge of the Company, threatened that (i) could reasonably be expected to have a material adverse effect on the performance of this Agreement or the consummation of any of the transactions contemplated hereby or (ii) could reasonably be expected to have a Material Adverse Effect, except as set forth in or contemplated in the Prospectus (exclusive of any supplement thereto). <Page> 6 (o) Each of the Company and each of its subsidiaries owns or leases all such properties as are necessary to the conduct of its operations as presently conducted. (p) Neither the Company nor any subsidiary is in violation or default of (i) any provision of its charter or bylaws, (ii) the terms of any indenture, contract, lease, mortgage, deed of trust, note agreement, loan agreement or other agreement, obligation, condition, covenant or instrument to which it is a party or bound or to which its property is subject, or (iii) any statute, law, rule, regulation, judgment, order or decree of any court, regulatory body, administrative agency, governmental body, arbitrator or other authority having jurisdiction over the Company or such subsidiary or any of its properties, as applicable, except, in the case of clauses (ii) and (iii) above, for such violations or defaults that would not have a Material Adverse Effect. (q) Ernst & Young LLP, who have certified certain financial statements of the Company and its consolidated subsidiaries and DGS and its consolidated subsidiaries and delivered their reports with respect to the audited consolidated financial statements and schedules included in the Prospectus, are independent public accountants with respect to the Company and its consolidated subsidiaries and DGS and its consolidated subsidiaries within the meaning of the Act and the applicable published rules and regulations thereunder. (r) PricewaterhouseCoopers LLP, who certified certain financial statements of DGS and its consolidated subsidiaries, were, at all times during their engagement in connection with the audit of the financial statements of DGS and its consolidated subsidiaries for the year ended December 31, 1999, independent public accountants within the meaning of Rule 101 of the Code of Professional Conduct of the American Institute of Certified Public Accountants. (s) There are no transfer taxes or other similar fees or charges under Federal law or the laws of any state, or any political subdivision thereof, required to be paid in connection with the execution and delivery of this Agreement or the issuance by the Company or sale by the Company of the Securities. (t) The Company has filed all foreign, federal, state and local tax returns that are required to be filed or has requested extensions thereof (except in any case in which the failure so to file would not have a Material Adverse Effect, except as set forth in or contemplated in the Prospectus (exclusive of any supplement thereto)) and has paid all taxes required to be paid by it and any other assessment, fine or penalty levied against it, to the extent that any of the foregoing is due and payable, except for any such assessment, fine or penalty that is currently being contested in good faith or as would not have a Material Adverse Effect, except as set forth in or contemplated in the Prospectus (exclusive of any supplement thereto). <Page> 7 (u) No labor problem or dispute with the employees of the Company or any of its subsidiaries exists and the Company is not aware of any threatened or imminent labor problem or dispute with such employees or of any existing or imminent labor disturbance by the employees of any of its or its subsidiaries' principal suppliers, contractors or customers, that could have a Material Adverse Effect, except as set forth in or contemplated in the Prospectus (exclusive of any supplement thereto). (v) The Company and each of its subsidiaries are insured by insurers of recognized financial responsibility against such losses and risks and in such amounts as are prudent and customary in the businesses in which they are engaged; all policies of insurance and fidelity or surety bonds insuring the Company or any of its subsidiaries or their respective businesses, assets, employees, officers and directors are in full force and effect; the Company and its subsidiaries are in compliance with the terms of such policies and instruments in all material respects; and there are no claims by the Company or any of its subsidiaries under any such policy or instrument as to which any insurance company is denying liability or defending under a reservation of rights clause; neither the Company nor any such subsidiary has been refused any insurance coverage sought or applied for; and neither the Company nor any such subsidiary has any reason to believe that it will not be able to renew its existing insurance coverage as and when such coverage expires or to obtain similar coverage from similar insurers as may be necessary to continue its business at a cost that would not have a Material Adverse Effect, except as set forth in or contemplated in the Prospectus (exclusive of any supplement thereto). (w) No subsidiary of the Company is currently prohibited, directly or indirectly, from paying any dividends to the Company, from making any other distribution on such subsidiary's capital stock, from repaying to the Company any loans or advances to such subsidiary from the Company or from transferring any of such subsidiary's property or assets to the Company or any other subsidiary of the Company, except as described in or contemplated by the Prospectus. (x) The Company and its subsidiaries possess all licenses, certificates, permits and other authorizations issued by the appropriate federal, state or foreign regulatory authorities necessary to conduct their respective businesses, except where the failure to possess such licenses, certificates, permits or other authorizations would not have a Material Adverse Effect, and neither the Company nor any such subsidiary has received any notice of proceedings relating to the revocation or modification of any such certificate, authorization or permit which, singly or in the aggregate, if the subject of an unfavorable decision, ruling or finding, would have a Material Adverse Effect, except as set forth in or contemplated in the Prospectus (exclusive of any supplement thereto). (y) The Company and each of its subsidiaries maintain a system of internal accounting controls sufficient to provide reasonable assurance that (i) transactions are executed in accordance with management's general or specific <Page> 8 authorizations; (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with generally accepted accounting principles and to maintain asset accountability; (iii) access to assets is permitted only in accordance with management's general or specific authorization; and (iv) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences. (z) The Company has not taken, directly or indirectly, any action designed to or that would constitute or that might reasonably be expected to cause or result in, under the Exchange Act or otherwise, stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Securities. (aa) The Company and its subsidiaries are (i) in compliance with any and all applicable foreign, federal, state and local laws and regulations relating to the protection of human health and safety, the environment or hazardous or toxic substances or wastes, pollutants or contaminants ("Environmental Laws"), (ii) have received and are in compliance with all permits, licenses or other approvals required of them under applicable Environmental Laws to conduct their respective businesses and (iii) have not received notice of any actual or potential liability for the investigation or remediation of any disposal or release of hazardous or toxic substances or wastes, pollutants or contaminants, except where such non-compliance with Environmental Laws, failure to receive required permits, licenses or other approvals, or liability would not, individually or in the aggregate, have a Material Adverse Effect, except as set forth in or contemplated in the Prospectus (exclusive of any supplement thereto). Neither the Company nor any of the subsidiaries has been named as a "potentially responsible party" under the Comprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended. (bb) In the ordinary course of its business, the Company periodically reviews the effect of Environmental Laws on the business, operations and properties of the Company and its subsidiaries, in the course of which it identifies and evaluates associated costs and liabilities (including, without limitation, any capital or operating expenditures required for clean-up, closure of properties or compliance with Environmental Laws, or any permit, license or approval, any related constraints on operating activities and any potential liabilities to third parties). On the basis of such review, the Company has reasonably concluded that such associated costs and liabilities would not, singly or in the aggregate, have a Material Adverse Effect, except as set forth in or contemplated in the Prospectus (exclusive of any supplement thereto). (cc) Each of the Company and its subsidiaries has fulfilled its obligations, if any, under the minimum funding standards of Section 302 of the United States Employee Retirement Income Security Act of 1974 ("ERISA") and the regulations and published interpretations thereunder with respect to each "plan" (as defined in Section 3(3) of ERISA and such regulations and published <Page> 9 interpretations) in which employees of the Company and its subsidiaries are eligible to participate and each such plan is in compliance in all material respects with the presently applicable provisions of ERISA and the Internal Revenue Code of 1986, as amended (the "Code"), including the related regulations and published interpretations, and has been administered in all material respects in accordance with its terms. Each Company plan which is intended to be qualified under Section 401(a) of the Code is so qualified; and each trust created under any such plan is exempt from tax under Section 501(a) of the Code. The Company and its subsidiaries have not incurred any unpaid liability to the Pension Benefit Guaranty Corporation (other than for the payment of premiums in the ordinary course) or to any such plan under Title IV of ERISA. No claim (other than routine claims for benefits) is pending with respect to the administration or the investment of any assets of any Company plan. (dd) The Company and its subsidiaries own, possess, license or have other rights to use, on reasonable terms and free and clear of all security interests or liens, except as otherwise set forth in the Prospectus, all patents, patent applications, trade and service marks, trade and service mark registrations, trade names, copyrights, licenses, inventions, trade secrets, technology, know-how and other intellectual property necessary for the conduct of the Company's business as now conducted or as proposed in the Prospectus to be conducted (collectively, the "Intellectual Property"), except where the failure to own, possess, license or otherwise have a right to use, on reasonable terms and free and clear of all security interests or liens, any Intellectual Property would not have a Material Adverse Effect. Except as otherwise set forth in the Prospectus: (i) to the Company's knowledge, there are no rights of third parties to any such Intellectual Property, except for licensors' rights, if any; (ii) to the Company's knowledge, except as could not reasonably be expected to have a Material Adverse Effect, the Company and each of its subsidiaries has performed all material obligations imposed upon them under any material license, material sublicense, material distribution agreement, or other material agreement relating to any Intellectual Property not owned by the Company or any of its subsidiaries and is not, nor to the Company's knowledge is any other party thereto, in material breach of any material terms or default of any material terms thereunder in any respect, nor is there any event known to the Company that with notice or lapse of time or both would constitute a default of any material term thereunder, and, to the Company's knowledge, all such Intellectual Property licenses are valid, enforceable, and in full force and effect and will continue to be so on identical terms immediately following the conclusion of the transaction contemplated hereby except as enforceability may be limited by applicable bankruptcy, insolvency, reorganization, fraudulent conveyance or transfer, moratorium or similar laws affecting the enforcement of creditors' rights; <Page> 10 (iii) to the Company's knowledge, there is no material infringement by third parties of any such Intellectual Property; (iv) there is no pending or, to the Company's knowledge, threatened action, suit, proceeding or claim by others challenging the Company's rights in or to any such Intellectual Property; (v) there is no pending or, to the Company's knowledge, threatened action, suit, proceeding or claim by others challenging the validity or scope of any such Intellectual Property; (vi) there is no pending or, to the Company's knowledge, threatened action, suit, proceeding or claim by others that the Company infringes or otherwise violates any patent, trademark, copyright, trade secret or other proprietary rights of others; (vii) to the Company's knowledge, there is no U.S. patent or published U.S. patent application which contains claims that dominate or may dominate any Intellectual Property described in the Prospectus as being owned by or licensed to the Company or that interferes with the issued or pending claims of any such Intellectual Property; (viii) there is no prior art of which the Company is aware that may render any U.S. patent held by the Company invalid or any U.S. patent application held by the Company unpatentable which has not been disclosed to the U.S. Patent and Trademark Office; (ix) to the Company's knowledge, no employee of the Company or any of its subsidiaries is in violation of any employment agreement, patent or invention disclosure agreement, or other agreement setting forth the terms of employment of such employee with the Company or any of its subsidiaries or any prior employee, except as would not reasonably be expected to have a Material Adverse Effect; (x) to the Company's knowledge, none of the material trade secrets of the Company, wherever located, the value of which is contingent upon maintenance of the confidentiality thereof, has been disclosed to any person other than to employees, representatives, and agents of the Company or any of its subsidiaries or to other persons who have executed appropriate nondisclosure agreements, except as required pursuant to the filing of a patent application by the Company or any of its subsidiaries; and (xi) all employees of the Company listed as executive officers in the Prospectus have executed and delivered invention agreements with the Company or the applicable subsidiary and are obligated under the terms thereof to assign all inventions made by them during the course of employment to the Company or to the applicable subsidiary, and no such <Page> 11 employee of the Company or any of its subsidiaries has excluded works or inventions made prior to his or her employment with or work for the Company or any of its subsidiaries from his or her assignment of inventions pursuant to such proprietary invention agreements. (ee) The Company has calculated its backlog as of December 31, 2001 and 2002 in compliance with the requirements of Item 101 of Regulation S-K under the Act. As of the date hereof, the Company is not aware of any facts or circumstances, including without limitation, any notice of any program cancelation or change in program schedule, contract reduction, modification or early termination, that could reasonably be expected to have a material adverse effect on its ability to recognize revenue during the year ended December 31, 2003 from approximately 30% of its total backlog as of December 31, 2002. (ff) Neither the Company nor any of its subsidiaries, nor, to the best of the Company's knowledge, any employee or agent of the Company or any subsidiary, has made any contribution or other payment to any official of, or candidate for, any federal, state or foreign office in violation of any law or of the character required to be disclosed in the Registration Statement and the Prospectus. (gg) There is no outstanding allegation of improper or illegal activities arising from any government audit or non-audit review, including without limitation, by the Defense Contract Audit Agency, of the Company or work performed by the Company or any of its subsidiaries or subcontractors that could reasonably be expected to have a Material Adverse Effect. There are no pending civil or criminal penalties or administrative sanctions arising from a government audit or non-audit review of the Company or work performed by the Company or any of its subsidiaries or subcontractors, including, but not limited to, termination of contracts, forfeiture of profits, suspension of payments, fines, or suspension or debarment from doing business with any U.S. federal government agency. As of the date hereof, the Company does not reasonably believe that it will be required to make any adjustments to the financial statements included in the Registration Statement and the Prospectus as a result of any pending government audit or non-audit review of the Company. Any certificate signed by any officer of the Company and delivered to the Representatives or counsel for the Underwriters in connection with the offering of the Securities shall be deemed a representation and warranty by the Company, as to matters covered thereby, to each Underwriter. 2. PURCHASE AND SALE. (a) Subject to the terms and conditions and in reliance upon the representations and warranties herein set forth, the Company agrees to sell to each Underwriter, and each Underwriter agrees, severally and not jointly, to purchase from the Company, at a purchase price of $ per share, the amount of the Underwritten Securities set forth opposite such Underwriter's name in Schedule I hereto. <Page> 12 (b) Subject to the terms and conditions and in reliance upon the representations and warranties herein set forth, the Company hereby grants an option to the several Underwriters to purchase, severally and not jointly, up to [_________] Option Securities at the same purchase price per share as the Underwriters shall pay for the Underwritten Securities. Said option may be exercised only to cover over-allotments in the sale of the Underwritten Securities by the Underwriters. Said option may be exercised in whole or in part at any time on or before the 30th day after the date of the Prospectus upon written or telegraphic notice by the Representatives to the Company setting forth the number of shares of the Option Securities as to which the several Underwriters are exercising the option and the settlement date. The number of Option Securities to be purchased by each Underwriter shall be the same percentage of the total number of shares of the Option Securities to be purchased by the several Underwriters as such Underwriter is purchasing of the Underwritten Securities, subject to such adjustments as you in your absolute discretion shall make to eliminate any fractional shares. 3. DELIVERY AND PAYMENT. Delivery of and payment for the Underwritten Securities and the Option Securities (if the option provided for in Section 2(b) hereof shall have been exercised on or before the third Business Day prior to the Closing Date) shall be made at 10:00 AM, New York City time, on , 2003, or at such time on such later date not more than three Business Days after the foregoing date as the Representatives shall designate, which date and time may be postponed by agreement between the Representatives and the Company or as provided in Section 9 hereof (such date and time of delivery and payment for the Securities being herein called the "Closing Date"). Delivery of the Securities shall be made to the Representatives for the respective accounts of the several Underwriters against payment by the several Underwriters through the Representatives of the purchase price thereof to or upon the order of the Company by wire transfer payable in same-day funds to an account specified by the Company. Delivery of the Underwritten Securities and the Option Securities shall be made through the facilities of The Depository Trust Company unless the Representatives shall otherwise instruct. If the option provided for in Section 2(b) hereof is exercised after the third Business Day prior to the Closing Date, the Company will deliver the Option Securities (at the expense of the Company) to the Representatives, at 388 Greenwich Street, New York, New York, on the date specified by the Representatives (which shall be within three Business Days after exercise of said option) for the respective accounts of the several Underwriters, against payment by the several Underwriters through the Representatives of the purchase price thereof to or upon the order of the Company by wire transfer payable in same-day funds to an account specified by the Company. If settlement for the Option Securities occurs after the Closing Date, the Company will deliver to the Representatives on the settlement date for the Option Securities, and the obligation of the Underwriters to purchase the Option Securities shall be conditioned upon receipt of, supplemental opinions, certificates and letters confirming as of such date the opinions, certificates and letters delivered on the Closing Date pursuant to Section 6 hereof. <Page> 13 4. OFFERING BY UNDERWRITERS. It is understood that the several Underwriters propose to offer the Securities for sale to the public as set forth in the Prospectus. 5. AGREEMENTS. The Company agrees with the several Underwriters that: (a) The Company will use its best efforts to cause the Registration Statement, if not effective at the Execution Time, and any amendment thereof, to become effective. Prior to the termination of the offering of the Securities, the Company will not file any amendment of the Registration Statement or supplement to the Prospectus or any Rule 462(b) Registration Statement unless the Company has furnished you a copy for your review prior to filing and will not file any such proposed amendment or supplement to which you reasonably object. Subject to the foregoing sentence, if the Registration Statement has become or becomes effective pursuant to Rule 430A, or filing of the Prospectus is otherwise required under Rule 424(b), the Company will cause the Prospectus, properly completed, and any supplement thereto to be filed with the Commission pursuant to the applicable paragraph of Rule 424(b) within the time period prescribed and will provide evidence satisfactory to the Representatives of such timely filing. The Company will promptly advise the Representatives (1) when the Registration Statement, if not effective at the Execution Time, shall have become effective, (2) when the Prospectus, and any supplement thereto, shall have been filed (if required) with the Commission pursuant to Rule 424(b) or when any Rule 462(b) Registration Statement shall have been filed with the Commission, (3) when, prior to termination of the offering of the Securities, any amendment to the Registration Statement shall have been filed or become effective, (4) of any request by the Commission or its staff for any amendment of the Registration Statement, or any Rule 462(b) Registration Statement, or for any supplement to the Prospectus or for any additional information, (5) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement or the institution or threatening of any proceeding for that purpose and (6) of the receipt by the Company of any notification with respect to the suspension of the qualification of the Securities for sale in any jurisdiction or the institution or threatening of any proceeding for such purpose. The Company will use its best efforts to prevent the issuance of any such stop order or the suspension of any such qualification and, if issued, to obtain as soon as possible the withdrawal thereof. (b) If, at any time when a prospectus relating to the Securities is required to be delivered under the Act, any event occurs as a result of which the Prospectus as then supplemented would include any untrue statement of a material fact or omit to state any material fact necessary to make the statements therein in the light of the circumstances under which they were made not misleading, or if it shall be necessary to amend the Registration Statement or supplement the Prospectus to comply with the Act or the rules thereunder, the Company promptly will (1) notify the Representatives of any such event, (2) prepare and file with the Commission, subject to the second sentence of paragraph (a) of this Section 5, an amendment or supplement which will correct such statement or omission or effect <Page> 14 such compliance; and (3) supply any supplemented Prospectus to you in such quantities as you may reasonably request. (c) As soon as practicable, the Company will make generally available to its security holders and to the Representatives an earnings statement or statements of the Company and its subsidiaries which will satisfy the provisions of Section 11(a) of the Act and Rule 158 under the Act. (d) The Company will furnish to the Representatives and counsel for the Underwriters signed copies of the Registration Statement (including exhibits thereto) and to each other Underwriter a copy of the Registration Statement (without exhibits thereto) and, so long as delivery of a prospectus by an Underwriter or dealer may be required by the Act, as many copies of each Preliminary Prospectus and the Prospectus and any supplement thereto as the Representatives may reasonably request. (e) The Company will arrange, if necessary, for the qualification of the Securities for sale under the laws of such jurisdictions as the Representatives may designate and will maintain such qualifications in effect so long as required for the distribution of the Securities; provided that in no event shall the Company be obligated to qualify to do business in any jurisdiction where it is not now so qualified or to take any action that would subject it to service of process in suits, other than those arising out of the offering or sale of the Securities, in any jurisdiction where it is not now so subject. (f) The Company will not, without the prior written consent of Citigroup Global Markets Inc. and UBS Securities LLC, offer, sell, contract to sell, pledge, or otherwise dispose of, (or enter into any transaction which is designed to, or might reasonably be expected to, result in the disposition (whether by actual disposition or effective economic disposition due to cash settlement or otherwise) by the Company or any affiliate of the Company or any person in privity with the Company or any affiliate of the Company) directly or indirectly, including the filing (or participation in the filing) of a registration statement with the Commission in respect of, or establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16 of the Exchange Act, any other shares of Common Stock or any securities convertible into, or exercisable, or exchangeable for, shares of Common Stock; or publicly announce an intention to effect any such transaction, for a period of 180 days after the date of the Underwriting Agreement, PROVIDED, HOWEVER, that the Company may (i) issue and sell Common Stock or securities exercisable for Common Stock pursuant to any employee stock option plan, stock ownership plan or dividend reinvestment plan of the Company in effect at the Execution Time, (ii) issue Common Stock issuable upon the conversion of securities or the exercise of warrants outstanding at the Execution Time, and (iii) issue Common Stock or securities convertible into, or exercisable, or exchangeable for, shares of Common Stock in exchange for equity or assets of another entity in connection with a merger, acquisition or strategic investment, PROVIDED THAT (a) such acquisition was <Page> 15 not preceded by an unsolicited tender offer for such equity interests by, or proxy contest initiated by, the Company or any subsidiary, (b) such entity shall be a going concern, (c) the aggregate fair value of the stock portion of the consideration for all such acquisitions shall not exceed $50,000,000, and (d) prior to any such issuance the recipient of such securities shall have agreed with Citigroup Global Markets Inc. and UBS Securities LLC to be bound by this provision for the remainder of the 180-day period. (g) The Company will not take, directly or indirectly, any action designed to or that would constitute or that might reasonably be expected to cause or result in, under the Exchange Act or otherwise, stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Securities. (h) The Company agrees to pay the costs and expenses relating to the following matters: (i) the preparation, printing or reproduction and filing with the Commission of the Registration Statement (including financial statements and exhibits thereto), each Preliminary Prospectus, the Prospectus, and each amendment or supplement to any of them; (ii) the printing (or reproduction) and delivery (including postage, air freight charges and charges for counting and packaging) of such copies of the Registration Statement, each Preliminary Prospectus, the Prospectus, and all amendments or supplements to any of them, as may, in each case, be reasonably requested for use in connection with the offering and sale of the Securities; (iii) the preparation, printing, authentication, issuance and delivery of certificates for the Securities, including any stamp or transfer taxes in connection with the original issuance and sale of the Securities; (iv) the printing (or reproduction) and delivery of this Agreement, any blue sky memorandum and all other agreements or documents printed (or reproduced) and delivered in connection with the offering of the Securities; (v) the registration of the Securities under the Exchange Act and the listing of the Securities on the New York Stock Exchange; (vi) any registration or qualification of the Securities for offer and sale under the securities or blue sky laws of the several states (including filing fees and the reasonable fees and expenses of counsel for the Underwriters relating to such registration and qualification); (vii) any filings required to be made with the National Association of Securities Dealers, Inc. (including filing fees and the reasonable fees and expenses of counsel for the Underwriters relating to such filings); (viii) the transportation and other expenses incurred by or on behalf of Company representatives in connection with presentations to prospective purchasers of the Securities; (ix) the fees and expenses of the Company's accountants and the fees and expenses of counsel (including local and special counsel) for the Company; and (x) all other costs and expenses incident to the performance by the Company of its obligations hereunder. 6. CONDITIONS TO THE OBLIGATIONS OF THE UNDERWRITERS. The obligations of the Underwriters to purchase the Underwritten Securities and the Option Securities, as the case may be, shall be subject to the accuracy of the representations and warranties on the part of the Company contained herein as of the Execution Time, the Closing Date and any settlement date pursuant to Section 3 hereof, to the accuracy of the statements of the <Page> 16 Company made in any certificates pursuant to the provisions hereof, to the performance by the Company of its obligations hereunder and to the following additional conditions: (a) If the Registration Statement has not become effective prior to the Execution Time, unless the Representatives agree in writing to a later time, the Registration Statement will become effective not later than (i) 6:00 PM New York City time on the date of determination of the public offering price, if such determination occurred at or prior to 3:00 PM New York City time on such date or (ii) 9:30 AM on the Business Day following the day on which the public offering price was determined, if such determination occurred after 3:00 PM New York City time on such date; if filing of the Prospectus, or any supplement thereto, is required pursuant to Rule 424(b), the Prospectus, and any such supplement, will be filed in the manner and within the time period required by Rule 424(b); and no stop order suspending the effectiveness of the Registration Statement shall have been issued and no proceedings for that purpose shall have been instituted or threatened. (b) The Company shall have requested and caused Fried, Frank, Harris, Shriver & Jacobson, counsel for the Company, to have furnished to the Representatives their opinion, dated the Closing Date and addressed to the Representatives, to the effect that: (i) each of the Company and its significant subsidiaries as defined by Rule 1-02 of Regulation S-X (the "Significant Subsidiaries") is validly existing as a corporation or limited liability company in good standing under the laws of the jurisdiction in which it is chartered or organized, with full corporate power, or, in the case of DGS, limited liability company power, and authority to own or lease, as the case may be, and to operate its properties and conduct its business as described in the Prospectus, and is duly qualified to do business as a foreign corporation or limited liability company and is in good standing under the laws of each jurisdiction listed on Schedule II attached hereto; (ii) all the outstanding shares of capital stock of the Company and DigitalNet, Inc. have been duly and validly authorized and issued and are fully paid and nonassessable; all outstanding membership interest of DGS were issued in conformity with the Delaware Limited Liability Company Act; and all outstanding shares of capital stock or membership interests of each subsidiary listed on Schedule III are owned of record by the Company or its wholly-owned subsidiary; (iii) the Company's authorized equity capitalization is as set forth in the Prospectus; the capital stock of the Company conforms in all material respects to the description thereof contained in the Prospectus under the caption "Description of Capital Stock"; the Securities being sold hereunder by the Company have been duly and validly authorized, and, when issued and delivered to and paid for by the Underwriters pursuant to <Page> 17 this Agreement, will be fully paid and nonassessable; the Securities being sold hereunder by the Company are admitted and authorized for trading, subject to official notice of issuance and evidence of satisfactory distribution, on the New York Stock Exchange; the certificates for the Securities, assuming they are in the form filed with the Commission, are in due and proper form under the Delaware General Corporation Law; and the holders of outstanding shares of capital stock of the Company are not entitled to statutory preemptive or, to such counsel's knowledge, other similar contractual rights to subscribe for the Securities; (iv) to the knowledge of such counsel and other than as set forth in the Prospectus, (a) there are no legal or governmental proceedings pending to which the Company or any of its subsidiaries is a party or of which any property of the Company or any of its subsidiaries is the subject which are required to be disclosed pursuant to Item 103 of Regulation S-K, and (b) no such proceedings are threatened or contemplated against the Company or any of its subsidiaries; and, to the knowledge of such counsel, there is no franchise, contract or other document of a character required to be described in the Registration Statement or Prospectus, or to be filed as an exhibit thereto, which is not described or filed as required; and the statements in the Prospectus under the heading "Government Contracting and Regulatory Process," insofar as such statements summarize, in general terms, the legal matters discussed therein, are, in all material respects, fair summaries of such legal matters; (v) the Registration Statement has become effective under the Act; any required filing of the Prospectus pursuant to Rule 424(b) has been made in the manner and within the time period required by Rule 424(b); to the knowledge of such counsel, no stop order suspending the effectiveness of the Registration Statement has been issued and no proceedings for that purpose have been instituted or threatened; (vi) the Registration Statement and the Prospectus (other than the financial statements, including the notes and schedules thereto, and other financial information derived therefrom, as to which such counsel need express no opinion) appeared on their face to be responsive in all material respects to the requirements of the Act and the rules thereunder; (vii) this Agreement has been duly authorized, executed and delivered by the Company; (viii) the Company is not and, after giving effect to the offering and sale of the Securities and the application of the proceeds thereof as described in the Prospectus, will not be, an "investment company" as defined in the Investment Company Act of 1940, as amended; <Page> 18 (ix) no consent, approval, authorization, filing with or order of any court or governmental agency or body is required in connection with the transactions contemplated herein, except such as have been obtained under the Act or the Securities Exchange Act of 1934, as amended, or any order, rule or regulation thereunder, and such as may be required by the NASD or under the state securities laws of any jurisdiction in connection with the purchase and distribution of the Securities by the Underwriters in the manner contemplated in this Agreement and in the Prospectus; and (x) neither the issue and sale of the Securities, nor the consummation of any other of the transactions herein contemplated nor the fulfillment of the terms hereof will conflict with, result in a breach or violation of or imposition of any lien, charge or encumbrance upon any property or assets of the Company or its Significant Subsidiaries pursuant to, (i) the charter or by-laws of the Company or its Significant Subsidiaries, (ii) the terms of any agreement or other instrument to which the Company or its subsidiaries is a party or bound or to which it or its property is subject that has been filed as an exhibit to the Registration Statement, PROVIDED, HOWEVER, that such counsel need express no opinion with respect to any violation, conflict, breach or default that arises under or is based upon any covenant of a financial or numerical nature or which requires arithmetic computation, (iii) any statute, law, rule, regulation of any governmental agency or authority of the United States or the State of New York or the Delaware General Corporation Law or the Delaware Limited Liability Company Act (except federal and state securities laws) or (iv) to the knowledge of such counsel, any judgment, order or decree applicable to the Company or its subsidiaries of any court, regulatory body, administrative agency, governmental body, arbitrator or other authority having jurisdiction over the Company or its subsidiaries or any of its or their properties. In addition, such counsel shall state that, in the course of the preparation by the Company of the Registration Statement and the Prospectus, they have participated in conferences with certain of the officers and representatives of, and the independent public accountants for, the Company, at which the Registration Statement and the Prospectus were discussed. Such counsel shall also state that between the date of effectiveness of the Registration Statement and the time of delivery of this letter, they have held additional conferences with certain of the officers and representatives of, and the independent public accountants for, the Company, at which the contents of the Prospectus were discussed to a limited extent. Such counsel shall state that given the limitations inherent in the independent verification of factual matters and the character of determinations involved in the registration process, (except as expressly set forth in their opinion) they are not passing upon or assuming any responsibility for the accuracy, completeness or fairness of the statements contained in the Registration Statement or the Prospectus and have made no independent check or verification thereof. Such counsel shall also state that subject to the foregoing and on the basis of the <Page> 19 information gained in the performance of the services referred to above, including information obtained from officers and other representatives of, and the independent public accountants for, the Company, no facts have come to such counsel's attention that have caused them to believe that the Registration Statement and the Prospectus included therein, as of its effective date, contained any untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary in order to make the statements therein not misleading or that the Prospectus, as of its date, contained any untrue statement of a material fact or omitted to state a material fact necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading. Also, such counsel shall state, subject to the foregoing, no facts have come to their attention in the course of proceedings described in the second sentence of this paragraph that cause them to believe that the Prospectus, as of the date and time of delivery of such letter, contains any untrue statement of a material fact or omits to state a material fact required to be stated therein or necessary in order to make the statements therein, in light of the circumstances in which they were made, not misleading. Such counsel shall also state that in each case, however, they expresses no view or belief with respect to financial statements, notes or schedules thereto or other financial or statistical data included in or omitted from the Registration Statement or Prospectus. In rendering such opinion, such counsel may rely as to matters of fact, to the extent they deem proper, on certificates of responsible officers of the Company and public officials. References to the Prospectus in this paragraph (b) include any supplements thereto at the Closing Date. (c) The Representatives shall have received from Cravath, Swaine & Moore LLP, counsel for the Underwriters, such opinion or opinions, dated the Closing Date and addressed to the Representatives, with respect to the issuance and sale of the Securities, the Registration Statement, the Prospectus (together with any supplement thereto) and other related matters as the Representatives may reasonably require, and the Company shall have furnished to such counsel such documents as they request for the purpose of enabling them to pass upon such matters. (d) The Company shall have furnished to the Representatives a certificate of the Company, signed by the Chairman of the Board or the President and the principal financial or accounting officer of the Company, dated the Closing Date, to the effect that the signers of such certificate have carefully examined the Registration Statement, the Prospectus, any supplements to the Prospectus and this Agreement and that: (i) the representations and warranties of the Company in this Agreement are true and correct on and as of the Closing Date with the same effect as if made on the Closing Date and the Company has complied with all the agreements and satisfied all the conditions on its part to be performed or satisfied at or prior to the Closing Date; <Page> 20 (ii) no stop order suspending the effectiveness of the Registration Statement has been issued and no proceedings for that purpose have been instituted or, to the Company's knowledge, threatened; and (iii) since the date of the most recent financial statements included in the Prospectus (exclusive of any supplement thereto), there has been no material adverse effect on the condition (financial or otherwise), prospects, earnings, business or properties of the Company and its subsidiaries, taken as a whole, whether or not arising from transactions in the ordinary course of business, except as set forth in or contemplated in the Prospectus (exclusive of any supplement thereto). (e) The Company shall have requested and caused Ernst & Young LLP to have furnished to the Representatives letters, at the Execution Time and at the Closing Date, dated respectively as of the Execution Time and as of the Closing Date, in form and substance satisfactory to the Representatives, confirming (i) that they are independent accountants within the meaning of Rule 101 of the American Institute of Certified Public Accountants Code of Professional Conduct and its interpretations and rulings and (ii) that they have performed a review of the unaudited interim financial information of the Company for the nine-month period ended September 30, 2002 in accordance with Statement on Auditing Standards No. 100 ("SAS 100"), and the nine-month period ended September 30, 2003, in accordance with SAS 100 and a review of the unaudited interim financial information of DGS for the nine-month period ended September 30, 2002 in accordance with SAS 100, and stating in effect that: (i) in their opinion the audited financial statements included in the Registration Statement and the Prospectus and reported on by them comply as to form in all material respects with the applicable accounting requirements of the Act and the related rules and regulations adopted by the Commission; (ii) on the basis of a reading of the latest unaudited financial statements made available by the Company and its subsidiaries; their limited review, in accordance with standards established under SAS 100, of DGS' and the Company's unaudited interim financial information for the nine-month period ended September 30, 2002 and in accordance with standards established under SAS 100, of the Company's unaudited interim financial information for the nine-month period ended September 30, 2003, included in the Registration Statement and the Prospectus, carrying out certain specified procedures (but not an examination in accordance with generally accepted auditing standards) which would not necessarily reveal matters of significance with respect to the comments set forth in such letter; a reading of the minutes of the meetings of the stockholders, directors and audit and compensation committees of the Company and its subsidiaries; and inquiries of certain officials of the Company who have responsibility for financial and accounting matters of the Company and its subsidiaries as to transactions and events subsequent to December 31, 2002, nothing came to their attention which caused them to believe that: (1) any unaudited financial statements included in the Registration Statement and the Prospectus do not comply as to form in all material respects with applicable accounting requirements of the Act; and said unaudited financial statements are not in conformity with generally accepted accounting principles applied on a basis substantially consistent with that of the audited financial statements included in the Registration Statement and the Prospectus; <Page> 21 (2) with respect to the period subsequent to September 30, 2003, there were any changes, at a specified date not more than five days prior to the date of the letter, in the long-term debt or other liabilities of the Company and its subsidiaries or the capital stock of the Company or decreases in the stockholders' equity or total assets of the Company as compared with the amounts shown on the September 30, 2003, consolidated balance sheet included in the Registration Statement and the Prospectus, or for the period from October 1, 2003, to such specified date there were any decreases, as compared with the results of DGS and its subsidiaries for the corresponding period in the prior years, in revenues, income from operations or net income of the Company and its subsidiaries, except in all instances for changes or decreases set forth in such letter, in which case the letter shall be accompanied by an explanation by the Company as to the significance thereof unless said explanation is not deemed necessary by the Representatives; (3) the information included in the Prospectus and Registration Statement in response to Regulation S-K, Item 301 (Selected Financial Data), Item 302 (Supplementary Financial Information) and Item 402 (Executive Compensation) is not in conformity with the applicable disclosure requirements of Regulation S-K; (4) [the unaudited income statement data included in the Final Prospectus under the heading "[Prospectus Summary - Recent Developments]" do not agree with the amounts set forth in the unaudited financial statements for the same periods or were not determined on a basis substantially consistent with that of the corresponding amounts in the audited financial statements included in the Registration Statement and the Final Prospectus]; and (iii) they have performed certain other specified procedures as a result of which they determined that certain information of an accounting, financial or statistical nature (which is limited to accounting, financial or statistical information derived from the general accounting records of the Company and its subsidiaries or DGS and its subsidiaries) set forth in the Registration Statement and the Prospectus, agrees with the accounting records of the Company and its subsidiaries or DGS and its subsidiaries, excluding any questions of legal interpretation; and (iv) on the basis of a reading of the unaudited pro forma consolidated statement of operations included in the Registration Statement and the Prospectus (the "pro forma statement of operations"); carrying out certain specified procedures; inquiries of certain officials of <Page> 22 the Company who have responsibility for financial and accounting matters; and proving the arithmetic accuracy of the application of the pro forma adjustments to the historical amounts in the pro forma statement of operations, nothing came to their attention which caused them to believe that the pro forma statement of operations (A) are not stated on a basis substantially consistent with that of the audited financial statements of the Company included in the Prospectus, (B) do not comply as to form in all material respects with the applicable accounting requirements of Rule 11-02 of Regulation S-X or (C) that the pro forma adjustments have not been properly applied to the historical amounts in the compilation of such statements. References to the Prospectus in this paragraph include any supplement thereto at the date of the letter. (f) Subsequent to the Execution Time or, if earlier, the dates as of which information is given in the Registration Statement (exclusive of any amendment thereof) and the Prospectus (exclusive of any supplement thereto), there shall not have been (i) any change or decrease specified in the letter or letters referred to in paragraph (e) of this Section 6 or (ii) any change, or any development involving a prospective change, in or affecting the condition (financial or otherwise), earnings, business or properties of the Company and its subsidiaries taken as a whole, whether or not arising from transactions in the ordinary course of business, except as set forth in or contemplated in the Prospectus (exclusive of any supplement thereto) the effect of which, in any case referred to in clause (i) or (ii) above, is, in the sole judgment of the Representatives, so material and adverse as to make it impractical or inadvisable to proceed with the offering or delivery of the Securities as contemplated by the Registration Statement (exclusive of any amendment thereof) and the Prospectus (exclusive of any supplement thereto). (g) Subsequent to the Execution Time, there shall not have been any decrease in the rating of any of the Company's debt securities by any "nationally recognized statistical rating organization" (as defined for purposes of Rule 436(g) under the Act) or any notice given of any intended or potential decrease in any such rating or of a possible change in any such rating that does not indicate the direction of the possible change. (h) The Securities shall have been listed and admitted and authorized for trading on the Nasdaq National Market, and satisfactory evidence of such actions shall have been provided to the Representatives. (i) At the Execution Time, the Company shall have furnished to the Representatives a letter substantially in the form of Exhibit A hereto from each officer and director of the Company and the stockholders identified on Annex A hereto. <Page> 23 (j) Concurrent with the consummation of the offering, each share of Class A Preferred Stock, and to the extent not previously redeemed, each share of Class B Preferred Stock of the Company shall be converted into Common Stock (including accrued but unpaid dividends), in each case, on the terms set forth in the Prospectus (exclusive of any supplement thereto). (k) Prior to the Closing Date, the Company shall have furnished to the Representatives such further information, certificates and documents as the Representatives may reasonably request. If any of the conditions specified in this Section 6 shall not have been fulfilled when and as provided in this Agreement, or if any of the opinions and certificates mentioned above or elsewhere in this Agreement shall not be reasonably satisfactory in form and substance to the Representatives and counsel for the Underwriters, this Agreement and all obligations of the Underwriters hereunder may be canceled at, or at any time prior to, the Closing Date by the Representatives. Notice of such cancelation shall be given to the Company in writing or by telephone or facsimile confirmed in writing. The documents required to be delivered by this Section 6 shall be delivered at the office of Cravath, Swaine & Moore LLP, counsel for the Underwriters, at 825 Eighth Avenue, New York, NY 10019, on the Closing Date. 7. REIMBURSEMENT OF UNDERWRITERS' EXPENSES. If the sale of the Securities provided for herein is not consummated because any condition to the obligations of the Underwriters set forth in Section 6 hereof is not satisfied, because of any termination pursuant to Section 10 hereof or because of any refusal, inability or failure on the part of the Company to perform any agreement herein or comply with any provision hereof other than by reason of a default by any of the Underwriters, the Company will reimburse the Underwriters severally through Citigroup Global Markets Inc. on demand for all out-of-pocket expenses (including reasonable fees and disbursements of counsel) that shall have been incurred by them in connection with the proposed purchase and sale of the Securities. 8. INDEMNIFICATION AND CONTRIBUTION. (a) The Company agrees to indemnify and hold harmless each Underwriter, the directors, officers, employees and agents of each Underwriter and each person who controls any Underwriter within the meaning of either the Act or the Exchange Act against any and all losses, claims, damages or liabilities, joint or several, to which they or any of them may become subject under the Act, the Exchange Act or other Federal or state statutory law or regulation, at common law or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon any untrue statement or alleged <Page> 24 untrue statement of a material fact contained in the registration statement for the registration of the Securities as originally filed or in any amendment thereof, or in any Preliminary Prospectus or the Prospectus, or in any amendment thereof or supplement thereto, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, and agrees to reimburse each such indemnified party, as incurred, for any legal or other expenses reasonably incurred by them in connection with investigating or defending any such loss, claim, damage, liability or action; PROVIDED, HOWEVER, that the Company will not be liable in any such case to the extent that any such loss, claim, damage or liability arises out of or is based upon any such untrue statement or alleged untrue statement or omission or alleged omission made therein in reliance upon and in conformity with written information furnished to the Company by or on behalf of any Underwriter through the Representatives specifically for inclusion therein; PROVIDED FURTHER, that with respect to any untrue statement or omission of material fact made in any Preliminary Prospectus, the indemnity agreement contained in this Section 8(a) shall not inure to the benefit of any Underwriter from whom the person asserting any such loss, claim, damage or liability purchased the Securities concerned, to the extent that any such loss, claim, damage or liability of such Underwriter occurs under the circumstances where it shall have been determined by a court of competent jurisdiction by final and nonappealable judgment that (w) the Company had previously furnished copies of the Prospectus to the Representatives, (x) delivery of the Prospectus was required by the Act to be made to such person, (y) the untrue statement or omission of a material fact contained in the Preliminary Prospectus was corrected in the Prospectus and (z) there was not sent or given to such person, at or prior to the written confirmation of the sale of such Securities to such person, a copy of the Prospectus. This indemnity agreement will be in addition to any liability which the Company may otherwise have. (b) Each Underwriter severally and not jointly agrees to indemnify and hold harmless the Company, each of its directors, each of its officers who signs the Registration Statement, and each person who controls the Company within the meaning of either the Act or the Exchange Act, to the same extent as the foregoing indemnity from the Company to each Underwriter, but only with reference to written information relating to such Underwriter furnished to the Company by or on behalf of such Underwriter through the Representatives specifically for inclusion in the documents referred to in the foregoing indemnity. This indemnity agreement will be in addition to any liability which any Underwriter may otherwise have. The Company acknowledges that the statements set forth in the last paragraph of the cover page regarding delivery of the Securities and, under the heading "Underwriting", (i) the list of Underwriters and their respective participation in the sale of the Securities, (ii) the sentences related to concessions and reallowances, (iii) the two paragraphs related to stabilization, syndicate covering transactions and penalty bids and (iv) the paragraph related to electronic distribution of the prospectus and allocation for electronic distribution of the Securities in any Preliminary Prospectus and the Prospectus constitute <Page> 25 the only information furnished in writing by or on behalf of the several Underwriters for inclusion in any Preliminary Prospectus or the Prospectus. (c) Promptly after receipt by an indemnified party under this Section 8 of notice of the commencement of any action, such indemnified party will, if a claim in respect thereof is to be made against the indemnifying party under this Section 8, notify the indemnifying party in writing of the commencement thereof; but the failure so to notify the indemnifying party (i) will not relieve it from liability under paragraph (a) or (b) above unless and to the extent it did not otherwise learn of such action and such failure results in the forfeiture by the indemnifying party of substantial rights and defenses and (ii) will not, in any event, relieve the indemnifying party from any obligations to any indemnified party other than the indemnification obligation provided in paragraph (a) or (b) above. The indemnifying party shall be entitled to appoint counsel of the indemnifying party's choice at the indemnifying party's expense to represent the indemnified party in any action for which indemnification is sought (in which case the indemnifying party shall not thereafter be responsible for the fees and expenses of any separate counsel retained by the indemnified party or parties except as set forth below); PROVIDED, HOWEVER, that such counsel shall be reasonably satisfactory to the indemnified party. Notwithstanding the indemnifying party's election to appoint counsel to represent the indemnified party in an action, the indemnified party shall have the right to employ separate counsel (including local counsel), and the indemnifying party shall bear the reasonable fees, costs and expenses of such separate counsel if (i) the use of counsel chosen by the indemnifying party to represent the indemnified party would present such counsel with a conflict of interest, (ii) the actual or potential defendants in, or targets of, any such action include both the indemnified party and the indemnifying party and the indemnified party shall have reasonably concluded that there may be legal defenses available to it and/or other indemnified parties which are different from or additional to those available to the indemnifying party, (iii) the indemnifying party shall not have employed counsel reasonably satisfactory to the indemnified party to represent the indemnified party within a reasonable time after notice of the institution of such action or (iv) the indemnifying party shall authorize the indemnified party to employ separate counsel at the expense of the indemnifying party. An indemnifying party will not, without the prior written consent of the indemnified parties, settle or compromise or consent to the entry of any judgment with respect to any pending or threatened claim, action, suit or proceeding in respect of which indemnification or contribution may be sought hereunder (whether or not the indemnified parties are actual or potential parties to such claim or action) unless such settlement, compromise or consent includes an unconditional release of each indemnified party from all liability arising out of such claim, action, suit or proceeding. (d) In the event that the indemnity provided in paragraph (a) or (b) of this Section 8 is unavailable to or insufficient to hold harmless an indemnified party for any reason, the Company and the Underwriters severally agree to contribute to the aggregate losses, claims, damages and liabilities (including legal or other expenses reasonably incurred in connection with investigating or defending same) (collectively "Losses") to which the Company and one or more of the Underwriters may be subject in such proportion as is appropriate to reflect the relative benefits received by the Company on <Page> 26 the one hand and by the Underwriters on the other from the offering of the Securities; PROVIDED, HOWEVER, that in no case shall any Underwriter (except as may be provided in any agreement among underwriters relating to the offering of the Securities) be responsible for any amount in excess of the underwriting discount or commission applicable to the Securities purchased by such Underwriter hereunder. If the allocation provided by the immediately preceding sentence is unavailable for any reason, the Company and the Underwriters severally shall contribute in such proportion as is appropriate to reflect not only such relative benefits but also the relative fault of the Company on the one hand and of the Underwriters on the other in connection with the statements or omissions which resulted in such Losses as well as any other relevant equitable considerations. Benefits received by the Company shall be deemed to be equal to the total net proceeds from the offering (before deducting expenses) received by it, and benefits received by the Underwriters shall be deemed to be equal to the total underwriting discounts and commissions, in each case as set forth on the cover page of the Prospectus. Relative fault shall be determined by reference to, among other things, whether any untrue or any alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information provided by the Company on the one hand or the Underwriters on the other, the intent of the parties and their relative knowledge, access to information and opportunity to correct or prevent such untrue statement or omission. The Company and the Underwriters agree that it would not be just and equitable if contribution were determined by pro rata allocation or any other method of allocation which does not take account of the equitable considerations referred to above. Notwithstanding the provisions of this paragraph (d), no person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. For purposes of this Section 8, each person who controls an Underwriter within the meaning of either the Act or the Exchange Act and each director, officer, employee and agent of an Underwriter shall have the same rights to contribution as such Underwriter, and each person who controls the Company within the meaning of either the Act or the Exchange Act, each officer of the Company who shall have signed the Registration Statement and each director of the Company shall have the same rights to contribution as the Company, subject in each case to the applicable terms and conditions of this paragraph (d). <Page> 27 9. DEFAULT BY AN UNDERWRITER. If any one or more Underwriters shall fail to purchase and pay for any of the Securities agreed to be purchased by such Underwriter or Underwriters hereunder and such failure to purchase shall constitute a default in the performance of its or their obligations under this Agreement, the remaining Underwriters shall be obligated severally to take up and pay for (in the respective proportions which the amount of Securities set forth opposite their names in Schedule I hereto bears to the aggregate amount of Securities set forth opposite the names of all the remaining Underwriters) the Securities which the defaulting Underwriter or Underwriters agreed but failed to purchase; PROVIDED, HOWEVER, that in the event that the aggregate amount of Securities which the defaulting Underwriter or Underwriters agreed but failed to purchase shall exceed 10% of the aggregate amount of Securities set forth in Schedule I hereto, the remaining Underwriters shall have the right to purchase all, but shall not be under any obligation to purchase any, of the Securities, and if such nondefaulting Underwriters do not purchase all the Securities, this Agreement will terminate without liability to any nondefaulting Underwriter or the Company. In the event of a default by any Underwriter as set forth in this Section 9, the Closing Date shall be postponed for such period, not exceeding five Business Days, as the Representatives shall determine in order that the required changes in the Registration Statement and the Prospectus or in any other documents or arrangements may be effected. Nothing contained in this Agreement shall relieve any defaulting Underwriter of its liability, if any, to the Company and any nondefaulting Underwriter for damages occasioned by its default hereunder. 10. TERMINATION. This Agreement shall be subject to termination in the absolute discretion of the Representatives, by notice given to the Company prior to delivery of and payment for the Securities, if at any time prior to such time (i) trading in the Company's Common Stock shall have been suspended by the Commission or the Nasdaq National Market or trading in securities generally on the New York Stock Exchange or the Nasdaq National Market shall have been suspended or limited or minimum prices shall have been established on such Exchange or the Nasdaq National Market, (ii) a banking moratorium shall have been declared either by Federal or New York State authorities or (iii) there shall have occurred any outbreak or escalation of hostilities, terrorism, declaration by the United States of a national emergency or war, or other national or international calamity or crisis the effect of which on financial markets is such as to make it, in the sole judgment of the Representatives, impractical or inadvisable to proceed with the offering or delivery of the Securities as contemplated by the Prospectus (exclusive of any supplement thereto). 11. REPRESENTATIONS AND INDEMNITIES TO SURVIVE. The respective agreements, representations, warranties, indemnities and other statements of the <Page> 28 Company or its officers and of the Underwriters set forth in or made pursuant to this Agreement will remain in full force and effect, regardless of any investigation made by or on behalf of any Underwriter or the Company or any of the officers, directors, employees, agents or controlling persons referred to in Section 8 hereof, and will survive delivery of and payment for the Securities. The provisions of Sections 7 and 8 hereof shall survive the termination or cancelation of this Agreement. 12. NOTICES. All communications hereunder will be in writing and effective only on receipt, and, if sent to the Representatives, will be mailed, delivered or telefaxed to the Citigroup Global Markets Inc. General Counsel (fax no.: (212) 816-7912) and confirmed to the General Counsel, Citigroup Global Markets Inc., at 388 Greenwich Street, New York, New York, 10013, Attention: General Counsel; or, if sent to the Company, will be mailed, delivered or telefaxed to DigitalNet Holdings, Inc. General Counsel (fax no.: (703) 563-7616) and confirmed to it at DigitalNet Holdings, Inc., 2525 Network Place, Herndon, Virginia, attention of the Legal Department. 13. SUCCESSORS. This Agreement will inure to the benefit of and be binding upon the parties hereto and their respective successors and the officers, directors, employees, agents and controlling persons referred to in Section 8 hereof, and no other person will have any right or obligation hereunder. 14. APPLICABLE LAW. This Agreement will be governed by and construed in accordance with the laws of the State of New York applicable to contracts made and to be performed within the State of New York. 15. COUNTERPARTS. This Agreement may be signed in one or more counterparts, each of which shall constitute an original and all of which together shall constitute one and the same agreement. 16. HEADINGS. The section headings used herein are for convenience only and shall not affect the construction hereof. 17. DEFINITIONS. The terms which follow, when used in this Agreement, shall have the meanings indicated. "Act" shall mean the Securities Act of 1933, as amended, and the rules and regulations of the Commission promulgated thereunder. "Business Day" shall mean any day other than a Saturday, a Sunday or a legal holiday or a day on which banking institutions or trust companies are authorized or obligated by law to close in New York City. "Commission" shall mean the Securities and Exchange Commission. "Effective Date" shall mean each date and time that the Registration Statement, any post-effective amendment or amendments thereto and any Rule 462(b) Registration Statement became or become effective. <Page> 29 "Exchange Act" shall mean the Securities Exchange Act of 1934, as amended, and the rules and regulations of the Commission promulgated thereunder. "Execution Time" shall mean the date and time that this Agreement is executed and delivered by the parties hereto. "Material Adverse Effect" shall mean any material adverse effect on the condition (financial or otherwise), prospects, earnings, business or properties of the Company and its subsidiaries, taken as a whole, whether or not arising from transactions in the ordinary course of business. "Preliminary Prospectus" shall mean any preliminary prospectus referred to in paragraph 1(a) above and any preliminary prospectus included in the Registration Statement at the Effective Date that omits Rule 430A Information. "Prospectus" shall mean the prospectus relating to the Securities that is first filed pursuant to Rule 424(b) after the Execution Time or, if no filing pursuant to Rule 424(b) is required, shall mean the form of final prospectus relating to the Securities included in the Registration Statement at the Effective Date. "Registration Statement" shall mean the registration statement referred to in paragraph 1(a) above, including exhibits and financial statements, as amended at the Execution Time (or, if not effective at the Execution Time, in the form in which it shall become effective) and, in the event any post-effective amendment thereto or any Rule 462(b) Registration Statement becomes effective prior to the Closing Date, shall also mean such registration statement as so amended or such Rule 462(b) Registration Statement, as the case may be. Such term shall include any Rule 430A Information deemed to be included therein at the Effective Date as provided by Rule 430A. "Rule 424", "Rule 430A" and "Rule 462" refer to such rules under the Act. "Rule 430A Information" shall mean information with respect to the Securities and the offering thereof permitted to be omitted from the Registration Statement when it becomes effective pursuant to Rule 430A. "Rule 462(b) Registration Statement" shall mean a registration statement and any amendments thereto filed pursuant to Rule 462(b) relating to the offering covered by the registration statement referred to in Section 1(a) hereof. <Page> 30 If the foregoing is in accordance with your understanding of our agreement, please sign and return to us the enclosed duplicate hereof, whereupon this letter and your acceptance shall represent a binding agreement among the Company and the several Underwriters. Very truly yours, DigitalNet Holdings, Inc. By: ---------------------- Name: Title: The foregoing Agreement is hereby confirmed and accepted as of the date first above written. Citigroup Global Markets Inc. UBS Securities LLC By: Citigroup Global Markets Inc. By: ----------------------- Name: Title: For themselves and the other several Underwriters named in Schedule I to the foregoing Agreement.