GuardWWW is one of the countless rogue anti-spyware applications coming from the WiniSoft malware family. Just like the other malicious programs developed by the creators of the WiniSoft series, GuardWWW tries to sell itself as a legitimate security software. GuardWWW is distributed online and downloaded by trojans which also install the application and its components.

Source: http://www.spywared.com/spyware-removal-instructions/2010/02/03/remove-guardwww-guard-www-removal.html