If you, like me, want to keep abreast of new developments in computer security, including the latest threats, viruses, etc., you’ll find the Guard Central Web site very useful. It aggregates security information and articles from many different Web sites and presents it in concise headlines, which you can click on for further information. I’ve been following it for a couple of weeks now, and find it very informative. It covers more than just basic security, and one can keep abreast of what various companies, organizations and governments are doing in the field. Highly recommended.
Peter
For informed commentary on a wide variety of security issues–computer, network, airline, home, etc.–check out Bruce Schneier's blog.