Tumbleweed Participating in ITAA Cyber Security Solutions in the e-Gov Era Conference

Tumbleweed offers security expertise dialogue to bring technology to government

REDWOOD CITY, CA - December 11, 2001 - Tumbleweed® Communications Corp. (Nasdaq:TMWD), a leading provider of secure content management solutions for enabling the business Internet, today announced that Jeffrey Smith, Tumbleweed Chairman and CEO, will be speaking at Information Technology Association of America's (ITAA) "Developing Cyber Security in the e-Government Era" conference December 11-12 at the Computer Sciences Corporation Executive Briefing Center in Falls Church, Virginia.

This event will include keynote presentations and panel discussions on the topics of cyber security and the next generation Internet, securing e-Government and information security challenges. Government officials, federal agency chief information officers and leaders from the information security industry will be participating. Those government officials include: The Hon. Tom Davis (R-VA), Chairman, House Subcommittee on Technology and Procurement Policy; Hon. Donald Upson, Secretary of Technology, Commonwealth of Virginia; and Jim Flyzik, Acting Assistant Secretary for Management and CIO, U.S. Department of Treasury and Vice Chairman of the Federal CIO Council.

"Tumbleweed is happy to be able to share our expertise in online secure content management with the government sector," said Jeffrey C. Smith, Chairman and CEO of Tumbleweed. "I am confident that such venues as this will help bridge the communication and knowledge sharing between the technology industry and government agencies. We are at a point where we must take advantage of industry knowledge and accelerate the way we look and implement secure policies for efficient online communications."

Tumbleweed provides secure online content management solutions to seven of the world's largest postal services including the U.S. Postal service, over 25 government agencies for government and civilian sectors and numerous government systems integrators and contractors for defense-related projects.

In a separate announcement today, the ITAA announced results from the national poll on America's concern about Internet and computer security, "Keeping the Faith: Government, Information Security and Homeland Cyber Defense." This poll found over 70 percent of Americans concerned about Internet and computer security. In addition, 74 percent of those polled, feared that personal information on the Internet could be stolen or used for malicious purposes. These findings reconfirm the need and heighten awareness for cyber security.

About Tumbleweed
Tumbleweed is a leading provider of solutions for managing secure communication and collaboration to enable the business Internet. Tumbleweed's robust policy-based framework empowers organizations to safely share and protect critical information, increase customer loyalty and privacy and dramatically reduce costs. Tumbleweed is trusted by 1,000 blue-chip customers including American Express, JP Morgan Chase & Co., Chevron, Datek Online, the European Union's Joint Research Council, US Food and Drug Administration, John Deere, Merrill Lynch, Nike, Northern Trust, NTT, Salomon Smith Barney, Travelers, United Parcel Service, and seven of the world's largest postal services. Eight of the Fortune 10 and 100 of the Fortune 500 are Tumbleweed customers. Tumbleweed Communications was founded in 1993 and is headquartered in Redwood City, CA with offices around the world.

Tumbleweed is a leading provider of solutions for managing secure communication and collaboration to enable the business Internet. Tumbleweed's robust policy-based framework empowers organizations to safely share and protect critical information, increase customer loyalty and privacy and dramatically reduce costs. Tumbleweed is trusted by 1,000 blue-chip customers including American Express, Chevron, Datek Online, the European Union's Joint Research Council, First Union Wachovia, John Deere, Merrill Lynch, Nike, Northern Trust, NTT, Salomon Smith Barney, Travelers and US Food and Drug Administration. One hundred of the Fortune 500 are Tumbleweed customers. Tumbleweed Communications was founded in 1993 and is headquartered in Redwood City, Calif., with offices around the world.

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 the security features of Tumbleweed's products and the activities of any third party. 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 30, 2001 and Form 10-Q filed November 13, 2001. Tumbleweed assumes no obligation to update information contained in this press release.