Network Associates A great place to get information on different viruses and security. Secure Computing Magazine awarded Network Associates' active security product line a prestigious five star Rating.
McAfee Download updates & free trials of virus software. Order online, view some of there technical books and get news and reviews on new products.
Symantec The makers of Nortan AntiVirus and many other very useful utilities to help your computer up and running.
Dr. Solomon's A company of Network Associates that suplies software and some great referances. Look here for a searchable data base of virus descriptions, news and alerts.