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Press Release

Symantec Announces New AntiVirus Solution for Clearswift MIMEsweeper

CUPERTINO, Calif. - April 07, 2003 - Symantec Corp. (NASDAQ: SYMC), the world leader in Internet security, today announced Symantec AntiVirus for Clearswift MIMEsweeper which provides scalable, high-performance virus scanning and repair services to protect traffic passing through Clearswift’s MAILsweeper for SMTP email content filtering solution. Through seamless integration of Symantec’s award-winning antivirus technologies, Symantec AntiVirus for Clearswift MIMEsweeper offers an advanced email content security solution for protection against malicious threats at the email gateway.

"This solution demonstrates Symantec's commitment to addressing the enterprise need for effective, scalable multi-layered protection for email traffic," said Greg Gotta, vice president, product delivery at Symantec. "Enterprise customers can use Symantec AntiVirus for Clearswift MIMEsweeper for best of breed antivirus and content filtering for their email traffic.”

Symantec AntiVirus for Clearswift MIMEsweeper is optimized for speed and rapid deployment while imposing minimal resource demands on existing network infrastructures. Symantec AntiVirus for Clearswift MIMEsweeper detects viruses, worms, and Trojan horses in all major file types, including mobile code and compressed file formats. Through seamless integration, policy and other configuration management is handled via the MAILsweeper console, simplifying administration.

“Symantec AntiVirus for Clearswift MIMEsweeper provides enterprise customers with a valuable, integrated solution to protect e-mail content,” said Paul Rutherford, CMO, Clearswift. “As a member of the Technology Partner Program, Clearswift is pleased to work with Symantec to provide multi-layered protection to our customers.”

Technology Partner Program
Through Symantec’s Technology Partner Program, Clearswift MIMEsweeper has met established criteria for interoperability earning the status of Symantec Certified Product for Symantec AntiVirus Scan Engine. Customers can be confident that Symantec AntiVirus for Clearswift MIMEsweeper will work seamlessly with Clearswift MIMEsweeper.

The Symantec Technology Partner Program establishes standards for how diverse security and infrastructure products from multiple vendors can work together with Symantec technologies to simplify complex enterprise networks for joint customers. Qualified partners have the ability to integrate their products with Symantec’s industry-leading security solutions and Symantec Enterprise Security Architecture, an interoperable framework based on industry standards that enables Symantec and third-party vendor solutions to work together to provide secure, manageable and scalable enterprise security. The Technology Partner Program offers comprehensive integration tools, development support, joint sales and marketing resources and product certification. Partners whose solutions meet Symantec’s established criteria for interoperability earn the use of Symantec certification logos. Detailed information on the program procedures, requirements and benefits can be found at www.symantec.com/technologypartners.

About Clearswift MIMEsweeper
Clearswift MIMEsweeper is the market leading family of products designed to implement email and web communications e-policies. With more than 13,000 customers worldwide, Clearswift MIMEsweeper delivers the capabilities for organizations to protect themselves against e-mail and web based threats, meet legal and regulatory requirements, implement productivity saving policies and manage the intellectual property passing through their network.

Based on the Symantec AntiVirus Scan Engine
The Symantec AntiVirus Scan Engine is a TCP/IP server application and communication Application Programming Interface (API) that allows for the integration of Symantec's antivirus technology into other server software applications and appliances. Symantec's key antivirus technologies include Bloodhound, NAVEX, LiveUpdate, and malicious mobile code detection for Java, ActiveX, and standalone script-based threats. With newly added support for ICAP 1.0 and continuing support for Microsoft Windows 2000, Sun Solaris, and Red Hat Linux, the Symantec AntiVirus Scan Engine can be deployed in heterogeneous enterprise environments. Clearswift developed a software interface that enables MAILsweeper for SMTP to use the Symantec AntiVirus Scan Engine for virus scan and repair services. Customers can obtain this free software interface from Clearswift.

Symantec AntiVirus Scan Engine is backed by Symantec Security Response, a global team of dedicated intrusion experts, security engineers, virus hunters, threat analysts, and technical support teams that work in tandem to provide extensive coverage for enterprise businesses and consumers. Symantec Security Response also leverages sophisticated threat and early warning systems to help provide customers with comprehensive, global, 24x7 Internet security expertise to proactively guard against today's blended Internet threats.

Availability
Symantec AntiVirus for Clearswift MIMEsweeper is available now. For trialware, or to obtain licensing information or locate a reseller, visit http://enterprisesecurity.symantec.com on the World Wide Web.

About Symantec
Symantec is the world leader in providing solutions to help individuals and enterprises assure the security, availability, and integrity of their information. Headquartered in Cupertino, Calif., Symantec has operations in more than 40 countries. More information is available at www.symantec.com.

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FORWARD LOOKING STATEMENT: This press release contains forward-looking statements, including forecasts of future revenue and earnings per share, expected industry patterns, and other financial and business results that involve known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or achievements to differ materially from results expressed or implied by this press release. Such risk factors include, among others: the sustainability of recent growth rates, particularly in consumer products; whether certain market segments, particularly enterprise security, grow as anticipated; the positioning of Symantec's products in those segments; the competitive environment in the software industry; ability to integrate acquired companies and technology; ability to retain key employees; ability to successfully combine product offerings and customer acceptance of combined products; general market conditions, fluctuations in currency exchange rates, changes to operating systems and product strategy by vendors of operating systems; and whether Symantec can successfully develop new products and the degree to which these gain market acceptance. Actual results may differ materially from those contained in the forward-looking statements in this press release. Additional information concerning these and other risk factors is contained in the Risk Factors sections of Symantec’s previously filed Form 10-K and Form 10-Q.