Principal AntiVirus protects your computer against viruses, trojans, worms, backdoors, spyware, adware, and other malware. It does not use signature scanners, requires no regular updates, and protects against both future as well as current malware. Principal AntiVirus is faster and more efficient than other antivirus software because it remains in a dormant state and does not come into action until a dangerous event is triggered.

Version 1.05 includes minor improvements.