Beware of Rogue Antispyware Software | Computer(2)

As a general rule of thumb, if a vendor advertises it rids your system of pop-ups and spyware using a pop-up ad, it should be suspect. Pop-up and banner advertisements will often claim your system is infected with spyware. A legitimate commercial antispyware products should not be claiming that they already detected an infection on your machine. .
According to a survey conducted by WebRoot and AOL, over 90% of computer users have some form of spyware on their machines, so frequent scanning is a necessity.
A Google search on "spyware" will result in millions of lists and sites. Our March 23rd, 2009 Security Watch Letter featured several free volunteer support sites that deal with spyware and the problems they cause.
Most of the websites that push rogue antispyware, as well as the ones that spread spyware and malicious code use vulnerabilities in your OS and browser to perform "drive by" installs, and display never ending pop-ups . Keeping your PC up-to-date is an easy way to minimize becoming a victim. Since Spyware Doctor blocks Viruses as well as keeping those up to date helps.