VeriSign (VRSN)

Consent of Independent Registered Public Accounting Firm

The Board of Directors

VeriSign, Inc.:

We consent to the incorporation by reference in the registration statements (Nos. 333-147136, 333-144590, 333-134026, 333-132988, 333-127249, 333-126352, 333-125052, 333-123937, 333-117908, 333-113431, 333-106395, 333-86188, 333-86178, 333-75236, 333-69818, 333-59458, 333-53230, 333-50072, 333-39212, 333-82941, 333-58583, 333-46803, and 333-45237) on Form S-8 and registration statements (Nos. 333-76386, 333-72222, 333-94445, 333-89991, 333-77433, and 333-74393) on Form S-3 of VeriSign, Inc. of our reports dated March 3, 2009, with respect to the consolidated balance sheets of VeriSign, Inc. as of December 31, 2008 and 2007, and the related consolidated statements of operations, stockholders’ equity and comprehensive income (loss), and cash flows for each of the years in the three-year period ended December 31, 2008, and the effectiveness of internal control over financial reporting as of December 31, 2008, which reports appear in the December 31, 2008 annual report on Form 10-K of VeriSign, Inc.

As discussed in Note 1 to the consolidated financial statements, effective January 1, 2007, the Company adopted the provisions of Financial Accounting Standards Board Interpretation No. 48, Accounting for Uncertainty in Income Taxes.

/s/ KPMG LLP

Mountain View, California

March 3, 2009

Consent of Independent Registered Public Accounting Firm

The Board of Directors

VeriSign, Inc.:

We consent to the incorporation by reference in the registration statement (Nos. 333-45237, 333-46803, 333-58583, 333-82941, 333-39212, 333-50072, 333-53230, 333-59458, 333-69818, 333-75236, 333-86178, 333-86188, 333-106395, 333-113431, 333-117908, 333-123937, 333-125052, 333-126352, 333-127249, 333-132988, 333-134026, 333-144590, and 333-147136) on Form S-8 and registration statements (Nos. 333-74393, 333-77433, 333-89991, 333-94445, 333-72222, and 333-76386) on Form S-3 of VeriSign, Inc. of our reports dated February 29, 2008, with respect to the consolidated balance sheets of VeriSign, Inc. as of December 31, 2007 and 2006, and the related consolidated statements of operations, stockholders’ equity, comprehensive (loss) income, and cash flows for each of the years in the three-year period ended December 31, 2007 and the effectiveness of internal control over financial reporting as of December 31, 2007, which reports appear in the December 31, 2007 annual report on Form 10-K of VeriSign, Inc.

As discussed in Note 1 to the consolidated financial statements, the Company adopted the provisions of Statement of Financial Accounting Standards No. 123 (revised 2004), Share-Based Payment and FASB Interpretation No. 48 (“FIN 48”), Accounting for Uncertainty in Income Taxes—an interpretation of FASB Statement No. 109, Effective January 1, 2006, and January 1, 2007, respectively.

Our report dated February 29, 2008, on the effectiveness of internal control over financial reporting as of December 31, 2007, expresses our opinion that VeriSign, Inc. did not maintain effective internal control over financial reporting as of December 31, 2007, because of a material weakness related to the Company’s stock administration policies and practices.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of VeriSign, Inc. and subsidiaries as of December 31, 2007 and 2006, and the related consolidated statements of operations, stockholders’ equity and comprehensive (loss) income, and cash flows for each of the years in the three-year period ended December 31, 2007. This material weakness was considered in determining the nature, timing, and extent of audit tests applied in our audit of the 2007 consolidated financial statements, and this report does not affect our report dated February 29, 2008, which expressed an unqualified opinion on those consolidated financial statements.

/s/ KPMG LLP

Mountain View, California

February 29, 2008

Consent of Independent Registered Public Accounting Firm

The Board of Directors

VeriSign, Inc.:

We consent to incorporation by reference in the registration statements on Form S-8 (Nos. 333-45237, 333-46803, 333-58583, 333-82941, 333-39212, 333-50072, 333-53230, 333-59458, 333-69818, 333-75236, 333-86178, 333-86188, 333-106395, 333-113431, 333-117908, 333-123937, 333-125052, 333-126352, 333-127249, 333-132988, 333-134026 and 333-144590), and registration statements on Form S-3 (Nos. 333-74393, 333-77433, 333-89991, 333-94445, 333-7222, and 333-76386) of VeriSign, Inc. of our report dated July 12, 2007, except for notes 2 and 4 which are as of November 2, 2007, with respect to the consolidated balance sheets of VeriSign, Inc. and subsidiaries (the Company) as of December 31, 2006 and 2005, and the related consolidated statements of income, stockholders’ equity, comprehensive income, and cash flows for each of the years in the three-year period ended December 31, 2006, which report appears on Form 8-K of VeriSign, Inc. dated November 2, 2007, and of our report dated July 12, 2007 with respect to management’s assessment of the effectiveness of internal control over financial reporting as of December 31, 2006, and the effectiveness of internal control over financial reporting as of December 31, 2006, which report appears in the December 31, 2006 annual report on Form 10-K of VeriSign, Inc.

Our report dated July 12, 2007, except for notes 2 and 4 which are as of November 2, 2007, contains an explanatory note that refers to the Company’s adoption of Statement of Financial Accounting Standards No. 123 (revised 2004), Share-Based Payment, effective January 1, 2006.

Our report dated July 12, 2007, on management’s assessment of the effectiveness of internal control over financial reporting and the effectiveness of internal control over financial reporting as of December 31, 2006, expresses our opinion that VeriSign, Inc. did not maintain effective internal control over financial reporting as of December 31, 2006, because of the effect of a material weakness related to the Company’s stock administration policies and practices and contains an explanatory paragraph that states that the material weakness was comprised of the following control deficiencies: (1) failure to consistently implement and apply policies and procedures related to the approval of equity-based grants to executive officers, retention grants and grants made in connection with new hires, promotions, and annual performance reviews; (2) lack of complete and timely reconciliation of grants and cancellations from the Company’s stock administration database to its financial reporting systems; lack of consistent reconciliation of grant dates in the system of record to supporting documentation; (3) inadequate supervision and training of personnel involved with the equity-based grant processes; and (4) lack of effective coordination and communication among the Human Resources Department, Accounting Department and Legal Department in connection with the administration of equity-based grants. The control deficiencies resulted in more than a remote likelihood that a material misstatement of the Company’s annual or interim financial statements would not be prevented or detected. A material weakness comprised of similar control deficiencies to those noted above resulted in material errors to, and the restatement of, the 2005 and 2004 annual consolidated financial statements and the condensed consolidated financial statements for the interim periods in 2005 and for the interim period ended March 31, 2006.

Our report on management’s assessment of the effectiveness of internal control over financial reporting and the effectiveness of internal control over financial reporting as of December 31, 2006, contains an explanatory paragraph that states the Company acquired m-Qube, Inc. (m-Qube) and inCode Telecom Group, Inc. (inCode) on May 1, 2006 and November 30, 2006, respectively, and management excluded from its assessment of the effectiveness of the Company’s internal control over financial reporting as of December 31, 2006 m-Qube’s and inCode’s internal control over financial reporting associated with total assets of $316,131,000 and $89,656,000, respectively, and total revenues of $26,985,000 and $5,000,000, respectively, included in the consolidated financial statements of VeriSign, Inc. and subsidiaries as of and for the year ended December 31, 2006. Our audit of internal control over financial reporting of VeriSign, Inc. also excluded an evaluation of the internal control over financial reporting of m-Qube and inCode.

/s/ KPMG LLP

Mountain View, California

November 2, 2007

Consent of Independent Registered Public Accounting Firm

The Board of Directors

VeriSign, Inc.:

We consent to incorporation by reference in the registration statements on Form S-8 (Nos. 333-45237, 333-46803, 333-58583, 333-82941, 333-39212, 333-50072, 333-53230, 333-59458, 333-69818, 333-75236, 333-86178, 333-86188, 333-106395, 333-113431, 333-117908, 333-123937, 333-125052, 333-126352, 333-127249, 333-132988, and 333-134026), and registration statements on Form S-3 (Nos. 333-74393, 333-77433, 333-89991, 333-94445, 333-7222, and 333-76386) of VeriSign, Inc. of our reports dated July 12, 2007, with respect to the consolidated balance sheets of VeriSign, Inc. and subsidiaries as of December 31, 2006 and 2005, and the related consolidated statements of income, stockholders’ equity, comprehensive income, and cash flows for each of the years in the three-year period ended December 31, 2006, management’s assessment of the effectiveness of internal control over financial reporting as of December 31, 2006, and the effectiveness of internal control over financial reporting as of December 31, 2006 which reports appear in the December 31, 2006 annual report on Form 10-K of VeriSign, Inc.

As discussed in note 2 to the consolidated financial statements, the consolidated financial statements as of December 31, 2005 and for each of the years in the two-year period ended December 31, 2005 have been restated.

As discussed in note 1 to the consolidated financials statements, effective January 1, 2006, the Company adopted the provisions of Statement of Financial Accounting Standards No. 123 (revised 2004), Share-Based Payment.

Our report dated July 12, 2007, on management’s assessment of the effectiveness of internal control over financial reporting and the effectiveness of internal control over financial reporting as of December 31, 2006, expresses our opinion that VeriSign, Inc. did not maintain effective internal control over financial reporting as of December 31, 2006, because of the effect of a material weakness related to the Company’s stock administration policies and practices and contains an explanatory paragraph that states that the material weakness was comprised of the following control deficiencies: (1) failure to consistently implement and apply policies and procedures related to the approval of equity-based grants to executive officers, retention grants and grants made in connection with new hires, promotions, and annual performance reviews; (2) lack of complete and timely reconciliation of grants and cancellations from the Company’s stock administration database to its financial reporting systems; lack of consistent reconciliation of grant dates in the system of record to supporting documentation; (3) inadequate supervision and training of personnel involved with the equity-based grant processes; and (4) lack of effective coordination and communication among the Human Resources Department, Accounting Department and Legal Department in connection with the administration of equity-based grants. The control deficiencies resulted in more than a remote likelihood that a material misstatement of the Company’s annual or interim financial statements would not be prevented or detected. A material weakness comprised of similar control deficiencies to those noted above resulted in material errors to, and the restatement of, the 2005 and 2004 annual consolidated financial statements and the condensed consolidated financial statements for the interim periods in 2005 and for the interim period ended March 31, 2006.

Our report on management’s assessment of the effectiveness of internal control over financial reporting and the effectiveness of internal control over financial reporting as of December 31, 2006, contains an explanatory paragraph that states the Company acquired m-Qube, Inc. (m-Qube) and inCode Telecom Group, Inc. (inCode) on May 1, 2006 and November 30, 2006, respectively, and management excluded from its assessment of the effectiveness of the Company’s internal control over financial reporting as of December 31, 2006 m-Qube’s and inCode’s internal control over financial reporting associated with total assets of $316,131,000 and $89,656,000, respectively, and total revenues of 26,985,000 and $5,000,000, respectively, included in the consolidated financial statements of VeriSign, Inc. and subsidiaries as of and for the year ended December 31, 2006. Our audit of internal control over financial reporting of VeriSign, Inc. also excluded an evaluation of the internal control over financial reporting of m-Qube and inCode.

KPMG LLP

Mountain View, California

July 12, 2007

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors

VeriSign, Inc.:

We consent to incorporation by reference in the registration statements (Nos. 333-45237, 333-46803, 333-58583, 333-82941, 333-39212, 333-50072, 333-53230, 333-59458, 333-69818, 333-75236, 333-86178, 333-86188, 333-106395 and 333-113431) on Form S-8, and registration statements (Nos. 333-74393, 333-77433, 333-89991, 333-94445, 333-72222, and 333-76386) on Form S-3 of VeriSign, Inc. of our reports dated March 15, 2005, with respect to the consolidated balance sheets of VeriSign, Inc. and subsidiaries as of December 31, 2004 and 2003, and the related consolidated statements of operations, stockholders’ equity, comprehensive income (loss), and cash flows for each of the years in the three-year period ended December 31, 2004, management’s assessment of the effectiveness of internal control over financial reporting as of December 31, 2004, and the effectiveness of internal control over financial reporting as of December 31, 2004 appearing elsewhere in this Form 10-K.

/s/    KPMG LLP

Mountain View, California

March 15, 2005