Many antivirus programs are available, but most of them are scanners that can only Detect known viruses. This clumsy method is ineffective at stopping new viruses and needs constant updating. Access to updates also generally requires an annual fee. That's why viruses like Blaster, Sasser and Bagle infected million of computers in a few days though most of them were "protected" by antivirus scanners.
In addition, antivirus scanners do not detect spyware and do not protect Internet Explorer. Internet Explorer is more and more the target of programs and web sites that install extra toolbars and buttons, and display advertising pop ups that slow down the computer.
VirusKeeper protects the computer against viruses AND spyware. VirusKeeper uses a powerful real-time threat detection engine. It monitors all aspects of your system : running processes, system files, the registry and the I/O ports. VirusKeeper acts as a shield against viruses, spyware and other malicious software. VirusKeeper also protects Internet Explorer from programs and web sites that try to change your default pages or try to install toolbars or spy components.
VirusKeeper uses a behavior analysis method, rather than the basic scanner employed by other antivirus programs. VirusKeeper analyzes the activity of all programs running in memory and flags any suspicious processes. You can use VirusKeeper and another antivirus scanner at the same time for the highest level of security.

THE NEW FEATURES OF VIRUSKEEPER 2009:
-9th generation real-time behavioural analysis engine
-New “Messenger Protect” feature
-New “Back Door Detect” protection
-New “NETWatch” function
-New “Cookies Manager” function