Riverbed Technology (RVBD)

The Board of
Directors and Stockholders

Riverbed Technology, Inc.

FACE="ARIAL" SIZE="2">We have audited the accompanying consolidated balance sheets of Riverbed Technology, Inc. as of December 31, 2008 and 2007, and the related consolidated statements of operations, preferred stock and stockholders’
equity (deficit) and cash flows for each of the three years in the period ended December 31, 2008. Our audits also included the financial statement schedule listed in the index at Item 15(b). These financial statements and schedule
are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements and schedule based on our audits.

FACE="ARIAL" SIZE="2">We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether
the financial statements and schedule are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting
principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

The Board of
Directors and Stockholders

Riverbed Technology, Inc.

FACE="ARIAL" SIZE="2">We have audited Riverbed Technology Inc.’s internal control over financial reporting as of December 31, 2008 based on criteria established in Internal Control — Integrated Framework issued by the Committee of
Sponsoring Organizations of the Treadway Commission (the COSO criteria). Riverbed Technology, Inc.’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of
internal control over financial reporting which is contained in Part I, Item 9A of this Annual Report on From 10-K under the heading “Management’s Report on Internal Control Over Financial Reporting.” Our responsibility is to
express an opinion on the Company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the
standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in
all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control
based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

The Board of Directors and Stockholders

Riverbed Technology, Inc.

We have audited Riverbed Technology
Inc.’s internal control over financial reporting as of December 31, 2007 based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (the COSO
criteria). Riverbed Technology, Inc.’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting which is contained in
Part I, Item 9A of this Annual Report on From 10-K under the heading “Management’s Report on Internal Control Over Financial Reporting.” Our responsibility is to express an opinion on the company’s internal control over
financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board
(United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an
understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other
procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s
internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted
accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions
and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that
receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized
acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent
limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in
conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, Riverbed Technology, Inc. maintained,
in all material respects, effective internal control over financial reporting as of December 31, 2007 based on the COSO criteria.

We
also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets as of December 31, 2007 and 2006, and the related consolidated statements of operations,
preferred stock and stockholders’ equity (deficit) and cash flows for each of the three years in the period ended December 31, 2007 and our report dated February 14, 2008 expressed an unqualified opinion thereon.