Antivirus System Pro is distributed on several fraudulent websites, but it usually makes its way on victims’ computer with help of trojans. Once Antivirus SystemPro is installed, it generates fake warning messages pushing people into buying the tool for removing fake infections. Don’t trust alerts or scan results loaded by AntivirusSystemPro. The program is malicious: it messes up with computer performance and internet connection. It also displays bunch of annoying pop-ups.