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Symantec Introduces New Multi-Layered Approach for Combating Enterprise Spam

Symantec Provides Enterprises With Superior Mail Security in a Single Easy-to-Manage Solution

CUPERTINO, Calif. – March 24, 2003 - Symantec Corp. (NASDAQ: SYMC), the world leader in Internet security, today announced a new mail security solution, Symantec AntiVirus for SMTP Gateways 3.1, which introduces multi-layered spam prevention integrated with award-winning virus protection. Enterprises now have a single solution for turning their Internet e-mail gateways into a first line of defense against both the growing onslaught of unsolicited e-mail and the danger of malicious code.

"Symantec has recognized that enterprise networks are subjected to multiple threats -- malicious or otherwise," said Brett Roquemore, senior LAN administrator, Ferguson Enterprises Inc. "Our experience with Symantec AntiVirus for SMTP Gateways has shown us that Symantec has provided a valuable all-in-one solution for protecting against Internet threats while reducing spam entering into our enterprise. It really comes down to having the right set of tools that work in a layered approach to maximize detection and minimize network downtime."

According to a recent study by Osterman Research, spam is the number one problem plaguing e-mail systems and administrators today, topping even viruses. Survey respondents expressed dissatisfaction with existing anti-spam products, categorizing them as limited, highly reactive, and unsophisticated.

"Symantec’s mail security solution has provided us with a front line solution for managing our virus protection and controlling spam at the entry point to our organization,” said Fred Thornton, director information systems, Grande Ronde Hospital. "The intuitive web-based interface makes the solution easy to manage and provides an excellent reporting tool for proactive SMTP management. Symantec AntiVirus for SMTP Gateways fits nicely into our tiered defense for virus protection and spam control allowing us to be vigilant in stopping threats before they enter our enterprise."

"Spam grew exponentially in 2002, flooding the Internet with billions of unwanted messages each day,” says Greg Gotta, vice president, product delivery at Symantec. "In addition to spam being a nuisance, this deluge is impacting mail storage as well as worker productivity. Symantec’s new mail security offering is designed to reduce spam and stop viruses at the earliest point of entry to the network.”

Spam Detection Through Blacklists, Whitelists and Heuristics
Spammers have been extremely innovative at bypassing spam defenses. As a result, any single technology – whether filtering-based, heuristic-based, or signature-based, is simply not enough to address the problem effectively. Multiple layers of spam detection are needed in addition to false positive prevention and management.

Symantec’s mail security offering introduces the integration of a number of layers of detection, including a heuristic anti-spam engine and support for multiple third-party real-time blacklists (RBL’s), in addition to customized blacklists and whitelists:

Heuristic antispam engine: One filtering layer in Symantec AntiVirus for SMTP Gateway is provided by a heuristic antispam scanning engine, which uses neural-network technology to tag messages when certain thresholds are reached. IT Administrators can adjust the sensitivity of the heuristics engine to strike the desired balance between maximum detection and minimum false positives.

Third-party real-time blacklists that list IP addresses based on known sources of spam are commonly used by administrators and provide another effective layer of defense. There are more than 125 such publicly available real-time blacklist services on the Internet, and administrators can use multiple lists at the same time for maximum coverage.

A custom whitelist feature is another filtering layer that can be used to prevent false positives and remediate problems when a sending mail server has been blacklisted. Administrators populate the whitelists with the domains of customers, partners, and other entities who are the source of desired communication. Whitelisted domains are exempt from scans by both the blacklist and heuristics filtering layers.

Subject-line filtering, a more traditional method of spam detection, is also available. The subject lines of messages that are not detected by the blacklists or the heuristics can be scanned for specific keywords, and wildcard support gives this feature additional flexibility, especially against polymorphic spam, where the subject line is slightly altered for each message sent.

Symantec’s mail security solution, Symantec AntiVirus for SMTP Gateways, is backed by an industry-leading team of dedicated security experts at Symantec Security Response. With around-the-clock access to up-to-the-minute virus information as well as rapid response and global support, Symantec’s mail security solution is a fast and reliable high-performance solution for eliminating e-mail-borne viruses and spam. Webcast

To learn more about Symantec’s mail security solution, an on-demand Webcast "Solutions for Combating Enterprise Spam” is available at:

Symantec AntiVirus for SMTP Gateways 3.1 with its powerful antispam enhancements is available now. For trialware, or to obtain licensing information or locate a reseller, visit 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

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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.