Websense Enterprise Client Application Manager Blocks MSBlaster Worm

Websense software provides vital early defense during time-critical window of exposure

CHERTSEY, 13 August 2003-Websense Inc. (NASDAQ: WBSN), the world’s leading provider of employee Internet management (EIM) software, announced today that its Client Application Manager (CAM) product provides vital early defense during the time-critical window of exposure to the MSBlaster worm and similar variants. Websense Enterprise CAM features lockdown and outbreak functionality that complements an organisation’s existing security infrastructure, including antivirus systems, enabling the organisation to more quickly respond to sudden electronic threats.

“It is very difficult for organisations to keep all of their desktops and systems current with up-to-the-minute patch levels and antivirus signatures. Even in the event of a crisis, updates can take hours, days, and in many cases weeks to complete without shutting down business-critical systems,” said Geoff Haggart, vice president Europe, Websense Inc. “This creates a serious window of vulnerability for an organisation’s computing systems.”

There is a window of opportunity at the outset of any virus outbreak when systems are vulnerable because they either do not have the latest patch or up-to-date antivirus signatures. This is where Websense Enterprise CAM provides a much-needed last line of defense. It offers IT administrators several options to combat incoming or existing threats to the desktop environment including lockdown and outbreak mode. Lockdown mode ensures that only pre-approved applications may run on the desktop, while outbreak mode enables IT administrators to immediately prevent malicious applications such as worms and viruses from executing and propagating.

The MSBlaster worm appeared earlier this week as the first in a likely series of worms that exploit a hole in Microsoft(r) Windows Remote Procedure Call (RPC) process. The hole enables the attacker to gain complete access to systems using Windows NT, XP and 2000. Microsoft publicly disclosed the vulnerability in its software in mid-July and issued a patch. Microsoft’s severity rating for the worm is “critical.”

Websense Enterprise CAM is available immediately for organisations seeking to protect themselves from MSBlaster worm and similar variants, security threats or viruses. For a free 30-day evaluation of CAM or more information on protecting your organisation from a wide range of threats including virus outbreaks and internal hacking exploits, visit www.websense.com. About Websense Inc.

Websense Inc. (NASDAQ: WBSN) is the world’s leading provider of employee Internet management solutions. Websense Enterprise software enables organisations to manage how employees use their computing resources, including Internet access, desktop applications and network bandwidth. These solutions help improve productivity and security, conserve information technology resources, and mitigate legal liability for our customers. Websense serves more than 19,400 customers worldwide, including many of the world’s largest corporations. For more information, visit www.websense.com.

This press release contains forward-looking statements that involve risks, uncertainties, assumptions and other factors which, if they do not materialize or prove correct, could cause Websense’s results to differ materially from historical results or those expressed or implied by such forward-looking statements. All statements, other than statements of historical fact, are statements that could be deemed forward-looking statements, including statements containing the words “planned,” “expects,” “believes,” “strategy,” “opportunity,” “anticipates” and similar words. These statements may include, among others, plans, strategies and objectives of management for future operations; any statements regarding proposed new products, services or developments; any statements regarding future economic conditions or performance; statements of belief and any statements of assumptions underlying any of the foregoing. The potential risks and uncertainties which contribute to the uncertain nature of these statements include, among others, customer acceptance of the company’s services, products and fee structures; the success of Websense’s brand development efforts; the volatile and competitive nature of the Internet industry; changes in domestic and international market conditions and the entry into and development of international markets for the company’s products; risks relating to intellectual property ownership; and the other risks and uncertainties described in Websense’s public filings with the Securities and Exchange Commission, available at http://www.sec.gov. Websense assumes no obligation to update any forward-looking statement to reflect events or circumstances arising after the date on which it was made.

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