Ten Free Must-Have Security Tools - WinPatrol
This ultimate watchdog program monitors Windows computers for signs of malicious hacker activity. It can also be used to monitor, stop and control Windows services, detect and review new auto-startup programs and monitor IE home and search pages.
Download link: http://www.winpatrol.com/
eWEEK's Ryan Naraine puts together a list of 10 free must-have consumer security utilities to help keep hackers at bay.