AppDefend is a kernel based application protection system, designed to be secure whilst using few resources. AppDefend intercepts various privileged actions and lets you decide whether they should occur or not.

Without AppDefend you are highly vulnerable to rootkits, worms, viruses and spyware. In some cases without AppDefend, the only way to fix the problem would be to format your hard drive and start fresh.

AppDefend is designed to work on Windows XP, 2000 and 2003.