UltimateAntivirus2008 (or Ultimate Antivirus 2008) is a rogue anti-spyware program. UltimateAntivirus2008 is a clone of Antivirus 2008, Antivirus2008, VistaAntivirus2008, VistaAntivirus 2008, Windows Antivirus 2008, SystemAntivirus2008, SystemAntivirus 2008 rogue anti-spyware programs. UltimateAntivirus2008 usually can be installed into user's computer by a Trojan which may slip into his system through a security hole. UltimateAntivirus2008 will show users fake system warning popups and alert messages about imaginary infection or threat to scare user into buying "full" version of UltimateAntivirus2008 useless program. Do not trust UltimateAntivirus2008 and delete it as soon as possible!