WistaAntivirus is a rogue anti-spyware program - a fake spyware remover and a clone of WinDefender 2008. This parasite uses trojans, such as Zlob and Vundo, to enter the system. To avoid infection, try not to download any codecs from warez/porn websites. WistaAntivirus relies on misleading advertising to convince the user he is infected and … Full WistaAntivirus removal guide