Tumbleweed to Announce Fourth Quarter and Full Year 2007 Financial Results on February 5, 2008

Tumbleweed® Communications Corp. (NASDAQ:TMWD), an industry leader in managed file transfer and content security, will report financial results for the fourth quarter and full year ended December 31, 2007 after the close of the market on Tuesday, February 5, 2008. What:   Tumbleweed's Fourth Quarter and Full Year 2007 Financial Results Conference Call   When: Tuesday, February 5, 2008 at 2:00 p.m. PT (5:00 p.m. ET)   Webcast: A live Webcast of the conference call can be accessed by logging onto the Investor Relations page at http://www.tumbleweed.com and clicking on the conference call icon.   Dial In: To access the live conference call by phone, dial (800) 218-0204. Participants are asked to call the assigned number approximately 10 minutes before the scheduled starting time. For those unable to participate in the live conference call, starting two hours after the call a replay will be available through February 19, 2008 by dialing (800) 405-2236 and entering the pass code 11106213#. Also, an instant replay of the conference call will be available over the Internet at http://www.tumbleweed.com in the Investor Relations area of the site. 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 Tumbleweed's financial outlook and quarterly and yearly financial results, as well as Tumbleweed's markets, solutions and future success. 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 November 9, 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 3,000 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.