Exhibit 32.1
Certification
Pursuant to 18 U.S.C. Section 1350, I, Michael W. Laphen, Chief Executive Officer of Computer Sciences Corporation (the Company), hereby certify that:
(1) The Company’s Amendment No. 1 to the Annual Report on Form 10-K/A for the year ended March 30, 2007 (the Report) fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934; and
(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
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| Dated January 11, 2008 | | /s/ MICHAEL W. LAPHEN |
| | Michael W. Laphen Chief Executive Officer |
