Tumbleweed Introduces Homeland Security Suite for Government and Private Companies That Provide Critical Infrastructure

Tumbleweed Secure Guardian Solutions Provide Security for Communications Traveling In and Out of the Enterprise

REDWOOD CITY, CA - February 19, 2002 - Tumbleweed® Communications Corp. (NASDAQ: TMWD), a leading provider of secure content management solutions for enabling the business Internet, introduced today Tumbleweed's Homeland Security Suite of solutions that protect vital communications flowing across enterprise networks in federal, state and local government agencies as well as civilian organizations that provide critical infrastructure (i.e., energy, utilities and telecommunications). The software bundle includes Tumbleweed Secure Mail and Tumbleweed Secure Web to protect the networks of these enterprises and Tumbleweed Secure Redirect and Tumbleweed Secure Public Network to safely provide secure channels of communication outside of the enterprise.

"This conveniently bundled package of solutions is in response to the increased demand in the public and private sectors to proactively secure online communications and information and protect IT infrastructures," said Michele Wrath, Vice President of Product Marketing at Tumbleweed. "Tumbleweed Secure Guardian solutions can work independently or together to provide a new level of content-focused security for government agencies and corporations and facilitate secure channels of communication."

According to a national poll taken in November, 2001 by the Information Technology Association of America (ITAA), about 74 percent of Americans polled were concerned about cyber attacks targeting critical infrastructures like telephone networks and power plants, in addition to government agencies that communicate and handle local, state and national security.

Government agencies are focused on increasing security of their IT infrastructure and improving online security practices. According to Federal Computer Week (February 1, 2002), the Bush administration is requesting a 15.6 percent increase for federal information technology spending for 2003-from $45 billion in fiscal 2002 to $52 billion in fiscal 2003.

Harris N. Miller, ITAA President, supports the increase and states, "We know that many agencies have vulnerable computer systems. We are pleased to see funding increase to support the efforts of the Office of Homeland Security and Cyberspace Security Advisor Richard Clark."

Some of Tumbleweed's current public and private sector infrastructure customers include the U.S. Department of Energy, the U.S. Food and Drug Administration, IDA Corporation (power provider for the state of Idaho), Hawaiian Electric Industries, ChevronTexaco, and Verizon.

Pricing and Availability
Tumbleweed Homeland Security Suite is immediately available. All Tumbleweed solutions have CPU-based pricing for the flexibility to add more CPUs as needs increase. At regular list pricing, the four components of the Homeland Security Suite would start at $144,000. The price for the new suite starts at $120,000 and increases depending on configuration and number of CPU requirements. For additional information on each of the solutions, go to www.tumbleweed.com.

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, 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.