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Symantec: Virus Security and Removal
View Symantec webcasts on practices for Security issues, threats and how to avoid them.
AVP Virus Encyclopedia
The AVP Virus Encyclopedia contains over 2300 computer virus descriptions accessible by keyword search or alphabetical index. The AVP Virus Encyclopedia is also available as a freeware distribution.
McAfee virus information home page
McAfee Associates specializes in network and security management. This page displays company news and product information, as well as links to virus descriptions and online technical support.
Webopedia's "Did You Know?" Article
The Difference Between a Virus, Worm and Trojan Horse.