MS Antivirus (or MS Antivirus 2008, MSAntivirus2008) is a rogue anti-spyware program with many names. Users can call this program AntivirusXP2008, XPAntivirus2008, Antivirus2009, Antivirus2008, VistaAntivirus2008, VistaAntivirus 2008, Windows Antivirus 2008, SystemAntivirus2008, SystemAntivirus 2008 or other because this program is a clone of these rogue anti-spyware programs. MS Antivirus can come into system with a Trojan, through spam emails or even other spyware. MS Antivirus generates fake system warning alerts, fake popup messages about "infection" to trick users into buying "full" version of MS Antivirus program. Users should not trust or buy MS Antivirus they should remove it as soon as possible!