SpyBot-S&D searches your hard disk for so-called spy or adbots.
Editor: Spybot - Search & Destroy application was designed to Detect and remove spyware, a relatively new kind of threat not yet covered by common anti-virus applications. Spyware silently tracks your surfing behaviour to Create a marketing profile for you that is transmitted without your knowledge to the compilers and sold to advertising companies.

If you see new toolbars in your Internet Explorer that you havent intentionally installed, if your browser crashes inexplicably, or if your home page has been hijacked (or changed without your knowledge), your computer is most probably Infected with spyware. Even if you dont see the symptoms, your computer may be infected, because more and more spyware is emerging. Spybot-S&D is free, so theres no harm giving it a try to see if something has invaded your computer.

Here are some key features of SpyBotSearch Destroy:

-Removal of keyloggers
-User-extendable database
-Save removal of threats by shredding them
-Backups of every removed problem
-Exclude option to ignore specific problems s
-Permanent blocking of known tracking cookies for IE
-Permanent blocking of threating downloads in IE
-Command line parameters to automate tasks
-Number of targets > 600 > 600
-Number of detection files and entries > 10000 > 10000
-Detailed information about problems found Yes Yes
-Strict criteria to define targets Yes Yes
-Integrated update function
-Weekly updates
-Free email & forum support Yes Yes
-Settings to automate scan, removal and update
-System reports to locate even unknown threats
-Skins to adjust interface to the users liking you can free download SpyBot - Search & Destroy 1.4 now.