MasterAntivirus (or Master Antivirus) is a rogue anti-spyware. MasterAntivirus is a clone of most popular rogue anti-spyware family that has a members like Antivirus 2008 (or Antivirus2008), XP Antivirus, UltimateAntivirus2008, XPAntivirus2008, Windows Antivirus 2008, WinAntivirusPro. MasterAntivirus usually can appear in user’s computer after a fake video codec installation that can come with Trojan, malware and virus. MasterAntivirus will generate fake scan reports, fake system popup error messages to trick into buying the "full" version of Master Antivirus. It is very important to remove Master Antivirus and all of its components. Do not trust or buy MasterAntivirus because it is useless program that wants to lure user’s money! Delete it as soon as possible!