Permanently replenishing information about new viruses. Mechanisms of breeding and operation, detailed analysis of algorithms of viruses. Methods to guard against computer viruses. http://www.viruslist.com
Collects virus information from multiple anti-virus vendors, and the collected information is grouped and indexed. When certain conditions are met virus alerts are generated and can be emailed. http://secunia.com/virus_information/
Trend Micro issues regular advisories regarding new viruses, including a guide to avoiding them in the first place. Site covers risk factor of the newest viruses. lists top ten virus and offers a security alert archive. http://www.trendmicro.com/vinfo/