MSAntivirus (or MSAntivirus2008, MS Antivirus 2008, MS Antivirus) is a rogue anti-spyware program. MSAntivirus software is a clone of AntivirusXP2008, XPAntivirus2008, Antivirus2009, Antivirus2008, VistaAntivirus2008, VistaAntivirus 2008, Windows Antivirus 2008, SystemAntivirus2008, SystemAntivirus 2008 rogue anti-spyware softwares. MSAntivirus usually comes into user's computer with a Trojan, which can slip into his system through a security hole, through spam emails or even other spyware. MSAntivirus will generate fake warning alerts, fake popup messages, fake scan reports about "infection" in user's computer to trick users into buying "full" version of MSAntivirus software. Delete MSAntivirus as soon as possible!