EXHIBIT 10g




                                 PROMISSORY NOTE

U.S. $600,00.00                                            Date: October 1, 1996

FOR VALUE RECEIVED,  WEBSECURE, INC., a Delaware corporation ("Maker"), promises
to pay to the order of KEYCORP LEASING LTD., a Delaware corporation  ("Holder"),
the sum of SIX HUNDRED  THOUSAND  DOLLARS  ($600,00.00)  in lawful  money of the
United States of America (the  "Principal"),  with interest thereon as hereafter
provided ("Interest"), to be paid in the manner set forth herein.

          1.  Interest  Rate:  Place of Payment.  Interest on the balance of the
Principal outstanding on this Promissory Note shall accrue from the date of this
Promissory  Note  and  shall  be due  and  payable  at a  fixed  rate of ten and
thirty-eight  hundredths  per annum (the  "Interest  Rate").  Interest  shall be
calculated on the basis of a 360-day year  consisting  of twelve 30-day  months.
Payment of the Principal and Interest  hereunder shall be made to Holder at P.O.
Box 1865,  Albany,  New York  12201-1865,  or at such other  place as Holder may
designate  from time to time in writing.  Holder  reserves  the right to require
payment  on this  Promissory  Note to be made by  wired  federal  funds or other
immediately available funds.

          2.  Repayment  Terms.  The  Principal  and  Interest  shall be due and
payable in 60 (sixty) consecutive monthly installments payable in arrears,  each
in  an  amount   equal  to   $12,860.70,   on   the_____   day  of  each   month
beginning_______, 1996 to and including__________, 2001. In addition, Maker will
pay a late payment charge of five percent (5%) of any payment due hereunder that
is not paid on or before the date due hereunder.

          3. Security  Agreement.  This Promissory Note is executed  pursuant to
that certain security agreement (the "Security Agreement") dated as of September
24,  1996  between  Maker and  Holder.  Capitalized  terms used  herein  without
definition shall have the meaning given them in the Security Agreement.

          4. Security.  Payment of the Principal and Interest hereunder, and the
performance and observance by Maker of all agreements,  covenants and provisions
contained herein, is secured by the grant by Maker to Holder of a first priority
security interest in the Collateral.

           5. Prepayment.  EXCEPT AS CONTEMPLATED BY CLAUSE (3) OF SECTION 10 OF
THE SECURITY AGREEMENT, MAKER MAY NOT PREPAY, IN WHOLE OR IN PART, THE PRINCIPAL
OUTSTANDING  HEREUNDER;  PROVIDED,  HOWEVER, THAT MAKER MAY PREPAY, IN WHOLE BUT
NOT IN PART,  THE  PRINCIPAL  OUTSTANDING  HEREUNDER  BY PAYING  TO HOLDER  SUCH
OUTSTANDING  PRINCIPAL,  TOGETHER WITH ALL ACCRUED AND UNPAID INTEREST  THEREON,
PLUS A PREPAYMENT PREMIUM  ("PREPAYMENT  PREMIUM") EQUAL TO FIVE PERCENT (5%) OF
SUCH OUTSTANDING PRINCIPAL.

          6. Transfer or Assignment.  Holder may at any time assign or otherwise
transfer or  negotiate  this  Promissory  Note in whole or in part,  without any
notice to Maker.  The rights and  obligations  of Maker may not be  assigned  or
delegated.

          7. Application of Payments. Prior to an Event of Default, each payment
received  on this  Promissory  Note  shall  be  applied  first  to all  costs of
collection,  then to unpaid late payment charges (if any) and Prepayment Premium
(if any) hereunder, then to Interest as of the payment due date and the balance,
if  any,  to  the  outstanding  Principal  as of the  date  received.  Upon  the
occurrence, and during the continuance,  of an Event of Default, any payments in
respect of the  Secured  Obligations  and any  proceeds of the  Collateral  when
received by Holder In cash or its equivalent,  will be applied first to costs of
collection  and,  thereafter,  in reduction of the Secured  Obligations  in such
order and manner as Holder







may direct in its sole  discretion,  and Maker  irrevocably  waives the right to
direct the application of such payments and proceeds and acknowledges and agrees
that Holder shall have the continuing  and exclusive  right to apply any and all
such payments and proceeds in the Holder's sole discretion,  notwithstanding any
entry to the contrary upon any of its books and records.

         8. Events of Default. (a) The occurrence of any of the following events
shall  constitute and be an event of default  hereunder (an "Event of Default"):
(1) Maker fails to make any  installment  of the  Principal or Interest,  or any
other  payment due and owing,  under this  Promissory  Note within five (5) days
after the same becomes due and payable;  or (2) Maker fails to perform any other
obligation  required to be performed by Maker under this  Promissory Note or any
of the other Loan  Documents for ten (10) days after written  notice from Holder
of such failure; or (3) any representation, warranty or other statement by or on
behalf of Maker in connection  with this  Promissory Note is false or misleading
in any  material  respect;  or (4) an  event  of  default  has  occurred  and is
continuing under the Security Agreement.

         (b) Notwithstanding anything to the contrary contained herein, upon the
occurrence of an Event of Default:  (i) Holder shall have the right to cause the
entire  outstanding  balance of the  Principal,  together  with all  accrued and
unpaid Interest thereon, to become immediately due and payable without notice or
demand which amounts shall,  together with all other sums due hereunder,  accrue
interest  from such  acceleration  until the date of actual  payment at the Late
Payment  Rate  (provided,  however,  that should  there occur a Default and if a
voluntary or  involuntary  petition under the United States  Bankruptcy  Code is
filed by or  against  Maker  while  such  Default  remains  uncured,  the entire
outstanding balance of the Principal  automatically shall be accelerated and due
and payable and interest  thereon at the Late Payment Rate  automatically  shall
apply as of the date of the first occurrence of the Default, without any notice,
demand  or  action  of any  type on the part of  Holder  (including  any  action
evidencing the  acceleration  or imposition of the Late Payment Rate).  The fact
that Holder has,  prior to the filing of the voluntary or  involuntary  petition
under the United States Bankruptcy Code, acted in a manner which is inconsistent
with  the  acceleration  and  imposition  of the Late  Payment  Rate  shall  not
constitute  a  waiver  of this  provision  or estop  Holder  from  asserting  or
enforcing Holder's rights  hereunder),  (ii) Maker shall pay on demand all costs
and  expenses  of Holder  with  respect  to the  enforcement  of its  rights and
remedies  hereunder  and  under  the  Security  Agreement,   including,  without
limitation, reasonable attorneys' fees, and (iii) Holder shall have the right to
exercise any and all remedies  available to it hereunder  and under the Security
Agreement.  The remedies of Holder provided herein and in the Security Agreement
shall be cumulative and concurrent and may be pursued  singly,  successively  or
concurrently  at the sole  discretion of Holder and may be exercised as often as
occasion  therefor  shall occur.  The failure to  exercise,  or any delay In the
exercise  of, any right or remedy  shall In no event be  construed  as a waiver,
release or exhaustion of any such remedies.

         9. Collection Costs. In addition to the Principal, Interest, Prepayment
Premium (if any), and late payment charges (if any), Holder shall be entitled to
collect all costs and expenses of  collection,  including,  without  limitation,
reasonable  attorneys'  fees,  incurred in  connection  with the  protection  or
realization of the Collateral or in connection with Holder's collection efforts,
whether or not suit on this  Promissory  Note or any  foreclosure  proceeding is
filed.  All such costs and expenses  shall be payable on demand and, until paid,
shall be Secured  Obligations secured by the security interest granted under the
Security Agreement and all other collateral,  if any, held by Holder as security
for Maker's obligations under this Promissory Note.

         10. Binding Agreement: Governing Law. This Promissory Note is delivered
in, and shall be interpreted and construed in accordance with, the internal laws
of the State of New York (without  regard to the conflict of laws  principles of
such state).  The provisions of this  Promissory Note shall be binding upon, and
shall  inure  to the  benefit  of,  the  parties  hereto  and  their  respective
successors and assigns.

         11. More than One Signer.  If more than one person or entity signs this
Promissory  Note as a Maker,  the obligations  contained  herein shall be deemed
joint and several and all  references  to "Maker"  shall apply both  jointly and
severally.
         

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         12.  General.  Maker  represents and warrants that this Promissory Note
evidences a loan for business or commercial purposes. By signing this Promissory
Note,  Maker agrees to be legally  bound to all terms and  conditions  contained
herein.

         13. Waiver.  MAKER AND ALL ENDORSERS,  SURETIES,  AND GUARANTORS HEREOF
HEREBY JOINTLY AND SEVERALLY WAIVE  PRESENTMENT FOR PAYMENT,  DEMAND,  NOTICE OF
NON-PAYMENT OR DISHONOR,  NOTICE OF PROTEST AND PROTEST OF THIS PROMISSORY NOTE.
MAKER HEREBY  WAIVES THE RIGHT TO TRIAL BY JURY IN ANY  LITIGATION  IN ANY COURT
WITH RESPECT TO, IN CONNECTION  WITH OR ARISING OUT OF, THIS  PROMISSORY NOTE OR
ANY DOCUMENT DELIVERED IN CONNECTION WITH THIS PROMISSORY NOTE.

         14. Usury:  Partial Invalidity.  (a) At no time shall the Interest Rate
(or the Late Payment Rate or other amounts paid or collected  hereunder)  exceed
the highest rate allowed by applicable law for this type of loan.  Should Holder
ever collect  interest at a rate that exceeds the such  applicable  legal limit,
such  excess  will be  credited  to the  Principal.  If the amount of the credit
exceeds the balance of the Principal then  outstanding on this Promissory  Note,
such  excess  will be  returned  to Maker;  and the  effective  rate of interest
automatically shall be reduced to the maximum lawful contract rate allowed under
Applicable Law as now or hereafter  construed by the courts having  jurisdiction
thereof.  Notwithstanding the foregoing,  if any applicable state law is amended
or the law of the United States of America preempts any applicable state law, so
that it becomes  lawful for Holder to receive a greater per annum  interest rate
than is presently  allowed by law, the Maker agrees that, on the effective  date
of such  amendment  or  preemption,  as the  case  may be,  the  lawful  maximum
hereunder  shall be increased to the maximum  Interest rate per annum allowed by
the  amended  state law or the law of the United  States of America  (but not In
excess of the Interest Rate,  or, if applicable,  the Late Payment Rate provided
for herein). All calculations of the rate of interest contracted for, charged or
received  under  this  Note or the  Security  Agreement  which  are made for the
purpose of  determining  whether such rate exceeds the maximum  lawful  contract
rate,  shall be made, to the extent  permitted by Applicable Law, by amortizing,
prorating, allocating and spreading in equal parts during the period of the full
stated  term of the  indebtedness  evidenced  hereby,  all  interest at any time
contracted  for,  charged or received  from the Maker or  otherwise by Holder in
connection with the Secured Obligations.

         (b) Whenever possible,  each provision of this Promissory Note shall be
 interpreted In such manner as to be effective and valid under  applicable  law,
 but if any provision of this  Promissory Note shall be prohibited by or invalid
 under the laws of any jurisdiction,  such provision,  as to such  jurisdiction,
 shall be ineffective to the extent of such  prohibition or invalidity,  without
 invalidating  the remainder of such  provision or the  remaining  provisions of
 this Promissory Note in any other jurisdiction.

         15. Notices. All notices and other communications under this Promissory
 Note  shall  be in  writing  and  shall be  addressed:  (i) if to  Maker,  1711
 Broadway,  Corporate  Center North,  Saugus,  MA 01906;  and (ii) if to Holder,
 KeyCorp  Leasing  Ltd.,  54 State Street,  Albany,  New York 12207,  Attention:
 Business  Coordinator,  or such other  address  as either  party  hereto  shall
 communicate to the other party at its address specified above. All such notices
 and other  communications  shall be deemed to have been duly given if delivered
 by  hand,  overnight  courier  or if sent by  certified  mail,  return  receipt
 requested,  to the party to whom such notice is intended to be given, and shall
 be effective upon receipt.


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          IN WITNESS WHEREOF,  Maker,  intending to be legally bound, has caused
this  Promissory  Note to be duly  executed  on the day  and  year  first  above
written.

MAKER:

WEBSECURE, INC.


By:
   --------------------------------
Name:
Title:


STATE OF                           )
                                   ) ss.:
COUNTY OF                          )


         On this 2nd day of October , 1996 , before me the subscriber personally
appeared  Robert  Kuzara , who being by me duly sworn,  did depose and say; that
he/she  resides at 19 Smith Farm Trail,  Lynnfield,  MA 01940 : that he/she is a
President  / CEO of  WebSecure,  Inc. , the  corporation  described  in an which
executed the foregoing instrument;  and that he signed his name thereto by order
of the Board of Directors of said corporation.


- ----------------------------
NOTARY PUBLIC

My commission Expires: Jan. 20,  2000


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                                    EXHIBIT A


COLLATERAL.  "Collateral"  shall include the property described herein or in any
attachment hereto and all replacements,  accessions,  substitutions,  additions,
products  and  proceeds  thereof,  whether now owned by  Borrower  or  hereafter
acquired.

        A.  DESCRIPTION  OF  COLLATERAL.  All of Borrower's  presently  owned or
hereafter acquired (1) accounts receivable,  accounts, chattel paper, documents,
contract rights,  instruments,  general  intangibles,  and all right,  title and
interest in sold,  leased,  or furnished  goods giving rise thereto  (including,
without limitation,  all rights (a) of stoppage in transit,  (b) of reclamation,
and (c) in returned or repossessed  goods),  (2) inventory  (including,  without
limitation,  all goods  that are (a) raw  materials,  (b) work in  process,  (c)
materials used or consumed in the ordinary course of Borrower's  business or (d)
in the  ordinary  course  of  Borrower's  business,  held  for  sale or lease or
furnished or to be furnished  under  contracts of service),  and (3)  equipment,
including,   without  limitation,  (a)  all  machinery,   office  furniture  and
furnishing,  tools,  dies, jigs, and molds, (b) all goods used or bought for use
primarily in Borrower's  business,  (c) all goods that are not consumer goods or
farm products.

        B. OTHER  COLLATERAL.  Collateral shall include all property,  including
but not limited to deposit  balances,  securities  and  dividends,  which now or
hereafter may be pledged,  hypothecated or otherwise  encumbered in favor of KCL
by the Borrower,  or be in the possession of KCL, its parents,  subsidiaries  or
affiliates.

        C. LOCATION OF COLLATERAL.  Collateral or records concerning same, shall
be kept at 1711 Broadway, Corporate Center North, Saugus, MA 01906.