Websense and Tumbleweed Announce Marketing Partnership; Best-of-Breed Companies Join Forces to Manage Web and Email Content

Solutions Help Customers Enforce Web and Email Policies, Add Layers of Security to Networks

REDWOOD CITY, CA - October 8, 2002 - Employee Internet management (EIM) company Websense Inc. (NASDAQ: WBSN) and secure messaging provider Tumbleweed Communications Corp. (NASDAQ: TMWD) today announced a marketing partnership to offer complementary, best-of-breed EIM software and secure messaging solutions to enterprises worldwide.

Websense Enterprise software will now become the recommended EIM solution of choice for Tumbleweed customers, and Tumbleweed solutions will now be recommended as the preferred secure messaging solution for Websense clients. Both companies will engage in joint marketing and sales programs to market to current customer lists and prospective accounts. Enterprises will benefit from the new partnership by being able to purchase an industry-leading product from each company. By combining Websense EIM and Tumbleweed email solutions, companies can readily enforce their existing Web and email use policies - increasing employee productivity, conserving valuable network bandwidth, reducing legal liability and providing an extra layer of security for their networks.

"Websense is the industry leader in the corporate EIM space," said Bill Bradford, vice president of marketing, Tumbleweed Communications Corp. "With the highest-quality URL database in the industry and the most scalable product on the market, Websense will be able to offer our customers a best-of-breed EIM solution to complement their existing Tumbleweed secure messaging deployments."

Tumbleweed's customer base includes more than 1,000 organizations in the United States, Europe and Asia, including Fortune Global 2,000 corporations in industries ranging from government agencies to financial services to health care. Websense's customer list includes 17,500 organizations worldwide, including half of the Fortune 500, approximately one-third of Japan's Nikkei 225 and half of the UK's FTSE 100.

"Customers can't afford to invest in a sub-par secure messaging solution, particularly with the critical need for unfettered email communication in the workplace," said Bill Goldbach, vice president of North America sales, Websense Inc. "That's why Websense is promoting the proven industry leader, Tumbleweed, whose best-of-breed secure messaging solutions will provide our Websense Enterprise customers with unmatched scalability and reliability, a comprehensive email policy gateway, and the most flexible secure delivery options in the market."

Driven by the growth of Internet-enabled employees, the EIM market segment is one of the fastest-growing in the Internet security sector and is expected to be a near $1 billion market by 2006, according to IDC. Similarly, a recent IDC study reported corporate email volume is expected to double by 2006, from the present level of 31 billion a day to 60 billion - leading to an increased need by corporations to manage this form of employee communication.

Tumbleweed's best-of-breed secure messaging solutions enable business to share sensitive information via email with customers and partners, transforming email from a potential source of liability and drain on resources into a tool for enhancing communication and maximizing productivity. Websense best-of-breed EIM software solutions, including Websense Enterprise, Websense Reporter and database Premium Groups, help companies increase employee productivity, conserve network bandwidth, reduce legal liability and add an extra layer of security.

About Tumbleweed
Tumbleweed is a leading provider of secure messaging solutions for businesses using the 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 the U.S. 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.

About Websense Inc.
Websense Inc. (NASDAQ: WBSN) is the worldwide leader of employee Internet management (EIM) solutions. Websense Enterprise software enables businesses to manage how their employees use the Internet, improving productivity, conserving network bandwidth and storage costs, and mitigating legal liability. Ranked the highest quality database in a recent test of EIM products, Websense delivers the most effective and comprehensive solution in the industry.

Founded in 1994, Websense serves more than 17,500 worldwide customers, ranging in size from 100-person firms to global corporations. These include more than half of the Fortune 500, approximately one-third of Japan's Nikkei 225 and half of the UK's FTSE 100, encompassing more than 12 million customer seats, pre-paid on a subscription basis. Websense has strategic technology relationships with Check Point (NASDAQ: CHKP), Cisco (NASDAQ: CSCO), Microsoft (NASDAQ: MSFT), NetScreen (NASDAQ: NSCN), Network Appliance (NASDAQ: NTAP), SonicWALL (NASDAQ: SNWL) and others. For more information, visit www.websense.com.

Except for the historical information contained herein, this press release contains forward-looking statements, including statements containing the words "planned," "expects," "believes," "strategy," "opportunity," "anticipates" and similar words. Such forward-looking statements are subject to known and unknown risks, uncertainties or other factors that may cause the company's actual results to be materially different from historical results or any results expressed or implied by such forward-looking statements. We assume no obligation to update any forward-looking statements to reflect events or circumstances arising after the date hereof. The potential risks and uncertainties which could cause actual growth and results to differ materially include but are not limited to, customer acceptance of the company's services, products and fee structures, the success of the company's brand development efforts, the volatile and competitive nature of the Internet industry, changes in domestic and international market conditions, and foreign exchange rates. Further information on the factors and risks that could affect Websense's business, financial condition and results of operations are included under the headings "Risk Factors," "Risks and Uncertainties" or "Factors Affecting our Operating Results" contained in Websense's public filings with the Securities and Exchange Commission, available at (http://www.sec.gov).

Tumbleweed cautions that forward-looking statements contained in this press release are based on current plans and expectations, and that a number of factors could cause the actual results to differ materially from the forward-looking statements made at this time. These factors are described in the Safe Harbor statement below. Tumbleweed undertakes no obligation to update this press release or statement about matters mentioned therein at any time, during the current quarter or in future quarters. 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 product plans, partnerships, and strategic plans. 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, 2002 and Form 10-Q filed August 14, 2002. Tumbleweed assumes no obligation to update information contained in this press release.