(Before I discuss this I wanna warn you all straight away.
DO...NOT...DOWNLOAD ANY OF THESE FAKE ANTI-VIRUSES, ANTI-SPYWARE ETC.
If you do... -_-)
SpySheriff is an infamous FAKE anti-spyware/anti-virus software that is designed to 'scare' the owner into thinking that their computer is swarming with viruses.
But in reality, these listings are all fake. Whilst the owner is panicking, the SpySheriff software is deliberately downloading (and installing) viruses, spyware, malware, worms and all the sort.
Once SpySheriff has taken over your system, getting rid of it will be very, very difficult (note the repetition of the very!) If you delete it via 'Add/Remove Programs' or even doing it manually, it'll just reinstall itself again through hidden components it installed. Trying to uninstall it may even cause the system to crash and the infamous 'Blue Screen Of Death' may occur. Eventually it'll stop you from using the internet (but it doesn't stop the internet connection o_o). You'll get a LOT of fake security warnings and get prevented from accessing any system restores.
So I hope you all get my warning I and strongly advise you to avoid any of these annoying pieces of s***.
Other FAKE anti-viruses you people should avoid are:
Adware Sheriff, Pest Trap, SpywareNo, Spylocked, SpywareQuake, SpyTrooper, Spydawn, AntiVirGear, Brave Sentry, System Security, SpywareStrike, SpyShredder, Alpha Cleaner, SpyBot SpyMarshal, and SpyAxe.
ALL THESE ARE A BIG NO-NO!!
(If you guys are wondering why I made this topic, is because I just saved my friend from this a week ago.)