SpySheriff is a well-known Rogue Antivirus that fools users into installing it by telling them that their computer may be infected. Once installed, the malware will inform users that their computer is critically infected with system threats by giving them exaggerated virus reports, pop-up windows and even changing the desktop background to a fake infection error message. SpySheriff will then inform the unlucky user that they need to purchase a full version of the product to remove the fake threats. Anyone who is fooled into giving away their credentials will most likely become a victim of identity theft. Also,it will automatically re-install itself if uninstalled.