WinPatrol

WinPatrol will alert you to hijackings, malware attacks and critical changes made to your computer without your permission. Installing WinPatrol is quick and easy.
When you run WinPatrol you may not notice any changes at all. The only visible change you'll see is Scotty on guard down in your system tray. That means WinPatrol is quietly on patrol and you'll only know it's running if there's some kind of potentially dangerous change made to your system.