October 2, 2008

Riverbed Technology to Announce Third Quarter Fiscal Year 2008 Financial Results

Riverbed Technology

Kristalle Ward, 415-247-8140 (Media)

[email protected]

Renee Lyall, 415-247-6353 (Investor Relations)

[email protected]

Riverbed Technology (Nasdaq:RVBD), the technology and market leader in wide-area data services (WDS), today announced the company will release third quarter fiscal year 2008 financial results after the close of the market on Thursday, October 23, 2008. Financial results will be released over Business Wire.

Following the press release, Riverbed will host a conference call at 2:45 p.m. PT (5:45 p.m. ET). The conference call will also be available as an audio webcast live via the internet at www.riverbed.com/investors. The conference call and webcast will include forward looking information. A replay of the audio webcast will be available at www.riverbed.com/investors for approximately 12 months.

About Riverbed

Riverbed Technology is the technology and market leader in wide- area data services (WDS) solutions for companies worldwide. By enabling application performance over the wide area network (WAN) that is orders of magnitude faster than what users experience today, Riverbed is changing the way people work, and enabling a distributed workforce that can collaborate as if they were local. Additional information about Riverbed (Nasdaq: RVBD) is available at www.riverbed.com.

Riverbed Technology, Riverbed, Steelhead, RiOS, Interceptor, and the Riverbed logo are trademarks or registered trademarks of Riverbed Technology, Inc. All other trademarks used or mentioned herein belong to their respective owners.

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