Tumbleweed Names Dave Harris Vice President of Worldwide Channels

VARBusiness Top "Executive to Watch" and CRN "Channel Chief" joins Tumbleweed to continue rapid channel program growth

Redwood City, Calif. – Oct. 21, 2007 – Tumbleweed® Communications Corp. (NASDAQ:TMWD), an industry leader in managed file transfer and content security, today announced that Dave Harris has joined the company as vice president of worldwide channels. In his role at Tumbleweed, Harris will drive the ongoing expansion of the Tumbleweed Alliance Program (TAP) around the globe. Mr. Harris will report to Nick Hulse, executive vice president of worldwide field operations at Tumbleweed.

"Dave’s extensive sales, channel and management experience coupled with his depth of expertise in data security will be a great asset to our company and partners," said Nick Hulse. "His recent recognition as a VARBusiness Top ‘Executive to Watch’ and a CRN ‘Channel Chief’ speak to his leadership and experience. I am looking to him to infuse the same level of energy and leadership into our rapidly growing channel program."

Mr. Harris brings 25 years of IT sales leadership experience to Tumbleweed. Previously, Harris was worldwide vice president of channels at SurfControl, where he oversaw the revitalization of their channel program. Prior to SurfControl, Harris was North American vice president of sales at ActivCard, where he more than doubled the amount of revenue generated by the channel. As vice president of worldwide sales and business development at Avantgo, acquired by Sybase, he increased average deal size by 300 percent. He also rose to the level of vice president at Adobe Systems, and held senior roles at Texas Instruments and Interlink LLC.

"I am joining Tumbleweed at an opportune time – its differentiated products and channel programs will help drive significant global expansion," said Mr. Harris. "I intend to bring my channel experience to bear, supporting our TAP partners as they drive new levels of product sales and adoption around the globe."

Harris joins Tumbleweed at a time of rapid partner expansion. Tumbleweed recently welcomed 12 new partners in the Asia-Pacific region, appointed a new EMEA managing director, and recruited a number of partners to join TAP in North America. TAP enables qualified security resellers, solution providers, service providers and system integrators to sell Tumbleweed’s differentiated managed file transfer, email security, and identity validation products while providing favorable margins and strong marketing and sales support to ensure success.

Harris received his Bachelor of Science degree in industrial engineering from Oregon State and his MBA from Northeastern University.

SAFE HARBOR STATEMENT
Tumbleweed cautions that forward-looking statements contained in this press release are based on plans and expectations as of the date of the press release, and that a number of factors could cause the actual results to differ materially from the guidance given at this time. These factors are described in the Safe Harbor statement below. Except for the historical information contained herein, the matters discussed in this press release may constitute forward-looking statements that involve risks and uncertainties that could cause actual results to differ materially from those projected, particularly with respect to Mr. Harris’s ongoing employment by Tumbleweed, his contributions to Tumbleweed, Tumbleweed’s global expansion, the Tumbleweed Alliance Program, and the ability of Tumbleweed’s partners to drive new levels of product sales and adoption. In some cases, forward-looking statements can be identified by terminology such as “may,” “will,” “should,” “potential,” “continue,” “expects,” “anticipates,” “intends,” “plans,” “believes,” “estimates,” and similar expressions. For further cautions about the risks of investing in Tumbleweed, we refer you to the documents Tumbleweed files from time to time with the Securities and Exchange Commission, particularly Tumbleweed’s Form 10-K filed March 14, 2007 and Form 10-Q filed August 7, 2007. Tumbleweed assumes no obligation to update information contained in this press release. Although this release may remain available on Tumbleweed’s website or elsewhere, its continued availability does not indicate that Tumbleweed is reaffirming or confirming any of the information contained herein.

About Tumbleweed
Tumbleweed Communications Corp. (NASDAQ:TMWD), an industry leader in managed file transfer and content security, provides enterprise-class solutions to organizations of all sizes. Tumbleweed’s innovative products enable organizations to effectively manage and protect business-critical Internet communications, with capabilities that span secure file transfer, encryption, data loss prevention, and email security. Tumbleweed has more than 2,900 customers worldwide, including blue-chip companies across an array of industries such as Technology, Retail, Finance, Healthcare, Manufacturing, Consumer Packaged Goods, Telecom, Energy, and the U.S. Government. The world’s most security conscious organizations rely upon Tumbleweed technology including Bank of America Securities, JP Morgan Chase & Co., the U.S. Food and Drug Administration, and the U.S. Department of Defense. Our award-winning products build on 14 years of R&D and 27 security patents in the U.S. alone – many of which are licensed by other security vendors. More information can be found at www.tumbleweed.com.

Tumbleweed is a registered trademark of Tumbleweed Communications Corp. in the United States and/or other countries. All other trademarks are the property of their respective owners.

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