SEPARATION & GENERAL RELEASE OF CLAIMS AGREEMENT

Exhibit 10.06

SEPARATION & GENERAL RELEASE OF CLAIMS AGREEMENT

I, Christine Brennan, acknowledge that my employment with Verisign, Inc. and/or a subsidiary of Verisign, Inc. (collectively, “Verisign” or the “Company”) terminated on July 1, 2011 (the “Termination Date”). In connection with the termination of my employment and in consideration of the payments and benefits to be provided by Verisign, as described in Appendix A, including the attached Equity Summary Statement which is incorporated therein (the “Separation Package”), I hereby agree to be bound by the terms of this Separation & General Release of Claims Agreement (“Release Agreement”), as follows:

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A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS WHICH THE CREDITOR DOES NOT KNOW OR SUSPECT TO EXIST IN HIS OR HER FAVOR AT THE TIME OF EXECUTING THE RELEASE, WHICH IF KNOWN BY HIM OR HER MUST HAVE MATERIALLY AFFECTED HIS OR HER SETTLEMENT WITH THE DEBTOR.

I hereby waive any right which I have or may have under Section 1542 or any similar statute or regulation of the state in which I reside to the full extent that I may lawfully waive such rights pertaining to this general release of claims.

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I understand and agree that if I am forty (40) years old or older on the date that I execute this Release Agreement, the definition of “Effective Date” and other provisions in Section 6.1 shall apply, and if I am thirty-nine (39) years old or younger on the date that I execute this Release Agreement, the definition of “Effective Date” and other provisions in Section 6.2 shall apply.

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BY SIGNING YOUR NAME BELOW, YOU ACKNOWLEDGE AND REPRESENT THAT YOU ARE ENTERING INTO THIS RELEASE AGREEMENT FREELY, KNOWINGLY, AND VOLUNTARILY AND WITH A FULL UNDERSTANDING OF ITS TERMS AND EFFECT. YOU ARE ADVISED TO CONSULT WITH YOUR OWN PERSONAL ATTORNEY BEFORE SIGNING THIS RELEASE AGREEMENT. YOU ALSO ACKNOWLEDGE AND REPRESENT THAT YOU HAVE NOT RELIED ON ANY REPRESENTATION OR STATEMENT OTHER THAN THOSE CONTAINED IN THIS RELEASE AGREEMENT.

Please remember to sign this Release Agreement and fax the entire Agreement (including Appendix A) to Katherine Resler in Human Resources in Dulles at ###-###-#### within the time period set forth in Section 6.0 above.

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APPENDIX A

To

SEPARATION & GENERAL RELEASE OF CLAIMS AGREEMENT

CHRISTINE BRENNAN

SEPARATION PACKAGE

Provided that you sign the Separation & General Release of Claims Agreement (the “Release Agreement”), return it to the Company in a timely manner, and do not revoke your acceptance (if you have that right), you will receive the below separation payments and equity acceleration benefits. Notwithstanding the foregoing, please note that the equity benefits in Sections B. – C. are contingent upon you having signed and returned Attachment 2 (Amendment to Options and RSUs) to your termination notice prior to the termination of your employment with the Company:

A. CASH SEPARATION PAYMENTS

The following payments will be made within thirty (30) days after you sign and timely return the Separation & General Release of Claims Agreement to the Company, provided you do not revoke your acceptance (if you have that right) in a timely manner.

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B. ACCELERATION OF STOCK OPTION VESTING AND EXERCISABILITY

Vesting has been accelerated subject to exercise restrictions with respect to 25% of your “In-the-Money Options”, if any, that were scheduled to vest after your Scheduled Termination Date specified in your Termination Notice. “In-the-Money Options” are those options that have a per share exercise price less than the closing price of Verisign, Inc. common stock, as quoted on the Nasdaq Global Market, on the date of your Termination Notice. Accelerated vesting has been applied to the eligible unvested “In-the-Money Options” having the lowest exercise price first.

The attached Equity Summary Statement reflects the Options that the Company will release for exercise within your E*Trade account, if any, subject to applicable post-employment exercise period limitations, as soon as administratively practicable (but in no event later than 30 days) after you sign and timely return the Separation & General Release of Claims Agreement to the Company and such Agreement becomes effective. All of such Options (together with any previously exercisable Options shown in your E*Trade account) will remain subject to the Verisign Stock Retention Policy for Verisign Board of Directors and Section 16 Officers (“the Verisign Stock Retention Policy”) as discussed below.

Vesting Acceleration Example for Options

Assumptions:

Outcome:

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Application of Verisign Stock Retention Policy

Consistent with the Verisign Stock Retention Policy, upon exercise of any Options, the Company will (i) issue in a restricted certificate form that number of shares which is equal to the value of fifty percent (50%) of net gain on exercise (the “Retained Shares”) and (ii) release for sale the remaining shares, both as soon as administratively practicable (but in no event later than 30 days) following the exercise date, subject to the Employee’s timely returned signed Release Agreement having become effective. The Retained Shares shall remain subject to sale restrictions until January 1, 2012.

Example:

Strike Price: $24

Number of Options Exercised: 200

Closing Price on Last Open Market Date Prior to Exercise: $36

Estimated Income on Exercise: $2,400

Assumed Tax On Exercise (50%): $1,200

Net Gain on Exercise: $1,200

50% of Net Gain on Exercise: $600

Share Equivalent: 16

In this example, pursuant to the Verisign Stock Retention Policy, 16 shares would be issued in a restricted certificate form (and would be subject to sale restrictions until January 1, 2012) and the remaining shares would be released for sale as soon as administratively practicable (but in no event later than 30 days) after exercise, subject to the Employee’s timely returned signed Release Agreement having become effective.

C. ACCELERATION OF RSU VESTING AND SETTLEMENT

Vesting has been accelerated subject to sale restrictions with respect to 25% of your RSUs, if any, that are scheduled to vest after your Scheduled Termination Date specified in your Termination Notice.

The attached Equity Summary Statement reflects the shares underlying the RSUs that the Company will cause to be deposited in your E*Trade account, net after tax withholding. Consistent with the Verisign Stock Retention Policy, of those shares, an amount of shares equal to the value of fifty percent (50%) of net gain on vest will be issued in a restricted certificate form and must be retained for a six month period beginning on the Termination Date. The remaining shares will be made available for sale as soon as administratively practicable (but in no event later than 30 days) after you sign and timely return the Release Agreement and such Release Agreement becomes effective.

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Vesting Acceleration Example for RSUs

Assumptions:

Outcome:

Example:

Number of Shares Vested On Termination Date: 200

Closing Price on Day of Vest / Termination Date: $36

Income on Vest: $7,200

Tax on Vest (50%): $3,600

Net Gain on Vest: $3,600

50% of Net Gain on Vest: $1,800

Share Equivalent: 50

Shares Subject to Holding Requirement Per Verisign Stock Retention Policy: 50

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In this example, pursuant to the Verisign Stock Retention Policy, 50 shares would be issued in a restricted certificate form as soon as administratively practicable (but no later than 30 days) after the Employee’s timely returned signed Release Agreement becomes effective and the Employee would be required to retain those 50 shares until January 1, 2012. The remaining shares would be released for sale as soon as administratively practicable (but no later than 30 days) after the Employee’s Release Agreement became effective.

In the event there is any discrepancy between the calculations in the equity acceleration process herein (Sections B and C above) and the calculations set forth on the attached Equity Summary Statement, the calculations set forth on the attached Equity Summary Statement shall control.

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