Security Heavyweights Join Spyware Fight

1. Check to see what the program does when it looks for spyware. Is it simply scanning for signatures? Is it also looking for suspicious activity? While some freeware packages just scan for known spyware, more advanced packages also monitor the actions of software that's running on your machine, and when that software starts doing something suspicious, such as installing without permission, or sending out information without asking, it gets flagged.