Cost and reliability are two giant problems confronting software developers and software users, in spite of advances in computer science. The following sources will aid you in exploring this subject.

Symantec's AntiVirus Research Center.
This site allows the user to access information about common computer viruses and frequently asked questions as well as product and service support.

Bug Busters Software Engineering, Inc.
Since 1988, Bug Busters has been providing quality software solutions for the AS/400. This site offers information about their products.