Exhibit 10.3

REVOLVING PROMISSORY NOTE

|$15,000,000 |  | Atlanta, Georgia
November    , 2002
|----------- |  | -----------------------------------

FOR
VALUE RECEIVED, the undersigned,WITNESS SYSTEMS, INC.,a Delaware corporation ("Borrower") promises to pay to the order of
Silicon Valley Bank, a California chartered bank ("Bank"), at such place as the holder hereof may designate, in lawful money of the United States of America, the aggregate unpaid principal amount of
all advances ("Advances") made by Bank to Borrower in accordance with the terms and conditions of the Loan and Security Agreement between Borrower and Bank dated April 3, 2002, as amended from
time to time (the "Loan Agreement"), up to a maximum principal amount of Fifteen Million Dollars ($15,000,000) ("Principal Sum"), or so much thereof as may be advanced or readvanced and remains
unpaid. Borrower shall also pay interest on the aggregate unpaid principal amount of such Advances, as follows:

Commencing
as of the date hereof and continuing until repayment in full of all sums due hereunder, the unpaid Principal Sum shall bear interest at the rates of interest provided for in
the LIBOR Supplement to Loan Agreement attached to the Loan Agreement. All interest payable under the terms of this Note shall be calculated on the basis of a 360-day year and the actual
number of days elapsed.

The
unpaid Principal Sum, together with interest thereon at the rate or rates provided above, shall be payable as follows:



The
fact that the balance hereunder may be reduced to zero from time to time pursuant to the Loan Agreement will not affect the continuing validity of this Note or the Loan Agreement,
and the balance may be increased to the Principal Sum after any such reduction to zero.

Borrower
further agrees that, if any payment made by Borrower or any other person is applied to this Note and is at any time annulled, set aside, rescinded, invalidated, declared to be
fraudulent or preferential or otherwise required to be refunded or repaid, or the proceeds of any "property hereafter securing this Note is required to be returned by Bank to Borrower, its estate,
trustee, receiver or any other party, including, without limitation, such Borrower, under any bankruptcy law, state or federal law, common law or equitable cause, then, to the extent of such payment
or repayment, Borrower's liability hereunder (and any lien, security interest or other collateral securing such liability) shall be and remain in full force and effect, as fully as if such payment had
never been made, or, if prior thereto any such lien, security interest or other collateral hereafter securing Borrower's liability hereunder shall have been released or terminated by virtue of such
cancellation or surrender, this Note (and such lien, security interest or other collateral) shall be reinstated in full force and effect, and such prior cancellation or surrender shall not diminish,
release, discharge, impair or otherwise affect the obligations of Borrower in respect of the amount of such payment (or any lien, security interest or other collateral securing such obligation).

This
Note is the "Revolving Promissory Note" described in the Loan Agreement, to which reference is hereby made for a more complete statement of the terms and conditions under which the
loans and advances evidenced hereby are made. This Note is secured as provided in the Loan Agreement. All capitalized terms used herein and not otherwise defined shall have the meanings given to such
terms in the Loan Agreement.

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Borrower
irrevocably waives the right to direct the application of any and all payments at any time hereafter received by Bank from or on behalf of Borrower and Borrower irrevocably
agrees that Bank shall have the continuing exclusive right to apply any and all such payments against the then due and owing obligations of Borrower as Bank may deem advisable. In the absence of a
specific determination by Bank with respect thereto, all payments shall be applied in the following order: (a) then due and payable fees and expenses; (b) then due and payable interest
payments and mandatory prepayments; and (c) then due and payable principal payments and optional prepayments.

Bank
is hereby authorized by Borrower to endorse on Bank's books and records each Advance made by Bank under this Note and the amount of each payment or prepayment of principal of each
such Advance received by Bank; it being understood, however, that failure to make any such endorsement (or any error in notation) shall not affect the obligations of Borrower with respect to Advances
made hereunder, and payments of principal by Borrower shall be credited to Borrower notwithstanding the failure to make a notation (or any errors in notation) thereof on such books and records.

The
occurrence of any one or more of the following events shall constitute an event of default (individually, an "Event of Default" and collectively, the "Events of Default") under the
terms of this Note:



Upon
the occurrence of an Event of Default, at the option of Bank, all amounts payable by Borrower to Bank under the terms of this Note shall immediately become due and payable by
Borrower to Bank without notice to Borrower or any other person, and Bank shall have all of the rights, powers, and remedies available under the terms of this Note, any of the other Loan Documents and
all applicable laws. Borrower and all endorsers, guarantors, and other parties who may now or in the future be primarily or secondarily liable for the payment of the indebtedness evidenced by this
Note hereby severally waive presentment, protest and demand, notice of protest, notice of demand and of dishonor and non-payment of this Note and expressly agree that this Note or any
payment hereunder may be extended from time to time without in any way affecting the liability of Borrower, guarantors and endorsers.

Borrower
promises to pay all costs and expense of collection of this Note and to pay all reasonable attorneys' fees incurred in such collection, whether or not there is a suit or action,
or in any suit or action to collect this Note or in any appeal thereof. Borrower waives presentment, demand, protest, notice of protest, notice of dishonor, notice of nonpayment, and any and all other
notices and demands
in connection with the delivery, acceptance, performance default or enforcement of this Note, as well as any applicable statutes of limitations. No delay by Bank in exercising any power or right
hereunder shall operate as a waiver of any power or right. Time is of the essence as to all obligations hereunder.

This
Note is issued pursuant to the Loan Agreement, which shall govern the rights and obligations of Borrower with respect to all obligations hereunder.

Borrower
acknowledges and agrees that this Note shall be governed by the laws of the State of Georgia, excluding conflicts of laws principles, even though for the convenience and at the
request of Borrower, this Note may be executed elsewhere.

BORROWER
ACCEPTS FOR ITSELF AND IN CONNECTION WITH ITS PROPERTIES, UNCONDITIONALLY, THE NON-EXCLUSIVE JURISDICTION OF ANY STATE OR FEDERAL COURT OF COMPETENT JURISDICTION IN
FULTON COUNTY, GEORGIA IN ANY ACTION,

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SUIT, OR PROCEEDING OF ANY KIND, AGAINST IT WHICH ARISES OUT OF OR BY REASON OF THIS AGREEMENT; PROVIDED, HOWEVER, THAT IF FOR ANY REASON BANK CANNOT AVAIL ITSELF OF THE COURTS OF FULTON COUNTY,
GEORGIA, BORROWER ACCEPTS JURISDICTION OF THE COURTS AND VENUE IN SANTA CLARA COUNTY, CALIFORNIA. BORROWER AND BANK EACH HEREBY WAIVE THEIR RESPECTIVE RIGHTS TO A JURY TRIAL OF ANY CLAIM OR CAUSE OF
ACTION BASED UPON OR ARISING OUT OF ANY OF THE LOAN DOCUMENTS OR ANY OF THE TRANSACTIONS CONTEMPLATED THEREIN, INCLUDING CONTRACT CLAIMS, TORT CLAIMS, BREACH OF DUTY CLAIMS, AND ALL OTHER COMMON LAW
OR STATUTORY CLAIMS. EACH PARTY RECOGNIZES AND AGREES THAT THE FOREGOING WAIVER CONSTITUTES A MATERIAL INDUCEMENT FOR IT TO ENTER INTO THIS AGREEMENT. EACH PARTY REPRESENTS AND WARRANTS THAT IT HAS
REVIEWED THIS WAIVER WITH ITS LEGAL COUNSEL AND THAT IT KNOWINGLY AND VOLUNTARILY WAIVES ITS JURY TRIAL RIGHTS FOLLOWING CONSULTATION WITH LEGAL COUNSEL.

[SIGNATURES
APPEAR ON THE FOLLOWING PAGE]

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IN
WITNESS WHEREOF, Borrower has caused this Note to be executed under sea] by its duly authorized partners/officers as of the date first written above.

|WITNESS/ATTEST: |  | WITNESS SYSTEMS, INC.
|--------------- |  | ---------------------
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|                |  | By:                  
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|                |  | Attest:              
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