SpywareBlaster doesn't scan for and clean spyware - it prevents it from being installed in the first place. SpywareBlaster prevents the installation of ActiveX-based spyware, adware, dialers, browser hijackers, and other potentially unwanted programs. It can also block spyware/tracking cookies in IE and Mozilla/Firefox, and restrict the actions of spyware/ad/tracking sites. With the built-in Check for Updates feature, you can help ensure your protection is up-to-date. SpywareBlaster also includes a System Snapshot feature, which lets you take a snapshot of your computer in its clean state and later revert, undoing many changes made by spyware and browser hijackers.
Version 3.3 adds improved Mozilla/Firefox support, better support for Netscape 7.x (under the Mozilla/Firefox protection), and contains various bug fixes and tweaks.