So a friend of mine had a virus called “Win32/Heur”. According to research, the Win32 Heur virus spreads via peer to peer programs such as iMesh, WinMX, Ares and torrents. This virus is nasty for a few reasons;

It actually records your browsing activities and displays advertisements to you based on your usage.
It de-activates your anti-virus [...]

If you’ve managed to attract the known trojan VirtuMonde - then you’re in trouble. This nasty trojan is known to act as a rogue antispyware program, showing advertisments and popups on your machine. Not only will it make your machine run slow, but also is known to perform denial of service attacks on websites of [...]