Symantec Announces Integration of New Anti-Spam Technology in Mail Security and Antivirus Enterprise Edition Solutions

TORONTO, ON - December 15, 2004 - Symantec Corp. (NASDAQ: SYMC), the global leader in information security, today announced Symantec Premium AntiSpam, an optional add-on subscription service for Symantec Mail Security and Symantec AntiVirus Enterprise Edition customers, scheduled to be available this month. Symantec Premium AntiSpam, powered by Brightmail technology and response, provides best-of-breed spam prevention without requiring additional administration or software installation.

Raising the bar for enterprise spam prevention, Symantec Premium AntiSpam add-on subscription service delivers the best combination of effectiveness and accuracy available in the market today. Multi-layered spam prevention leverages more than 20 filtering technologies, including spam signatures, heuristics, reputation filters, language identification and proprietary methods, with automatic updates occurring within every 10 minutes. The service enables organizations to achieve high detection rates of 95 percent and the industry's highest accuracy rate against false positives (99.9999 percent), allowing users to safely delete spam without review. No new software or hardware is required, and the service requires no additional IT administration or tuning once deployed.

"Symantec Premium AntiSpam showcases Symantec's ongoing commitment to providing its customers with the most innovative and technically proficient mail security solutions on the market," said Enrique Salem, senior vice president, network and gateway solutions, Symantec Corp. "Symantec Premium AntiSpam is a clear demonstration of Symantec's ability to quickly integrate market-leading technology, acquired from Brightmail, into our existing product line."

Symantec Mail Security for Domino™, Symantec Mail Security for Microsoft® Exchange and Symantec Mail Security for SMTP each provide high-performance, integrated mail protection against virus threats, spam, and other unwanted content. Symantec's award-winning extensible NAVEXTM antivirus technology defends against new and known viruses, while attachment and subject line blocking provide hour-zero responses against emerging threats. Symantec Mail Security solutions include spam tools such as antispam heuristics, custom filtering rules, support for third-party real-time blacklists, as well as custom allow and blocks lists.

Symantec AntiVirus Enterprise Edition, which comprises the Symantec Mail Security product line, provides virus protection, content filtering, and spam prevention for the groupware server and gateway, and virus protection for the desktop in a single, easy-to-deploy solution. It combines award-winning technologies and Symantec's global response infrastructure to provide effective protection at every network tier.

Availability
Symantec Premium AntiSpam will be available in December 2004 and sold on a subscription model through Symantec's worldwide network of value-added authorized resellers, distributors and systems integrators. Organizations can be connected with Symantec's resellers and distributors in their areas by visiting the Symantec Solution Provider locator at https://partnernet.symantec.com/internet/locator/Locator01.asp.

About Symantec
Symantec, the world leader in Internet security technology, provides a broad range of content and network security software and appliance solutions to individuals, enterprises and service providers. The company is a leading provider of client, gateway and server security solutions for virus protection, firewall and virtual private network, vulnerability management, intrusion detection, Internet content and e-mail filtering, remote management technologies and security services to enterprises and service providers around the world. Symantec's Norton brand of consumer security products is a leader in worldwide retail sales and industry awards. Headquartered in Cupertino, Calif., Symantec has worldwide operations in 36 countries. For more information, please visit www.symantec.com.

Symantec's Canadian operations are headquartered in Toronto with offices in Montreal, Ottawa, Calgary and Vancouver. For more information on Symantec products or current promotions, contact the Canadian office at (416) 441-3676 or access Symantec's Canadian Web site at www.symantec.ca. Symantec is an active member of the Canadian Alliance Against Software Theft (CAAST).

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