uTorrent & BitTorrent sites Hacked, spread Security Shield Malware on Tuesday. Attack occurred at around 04:20 Pacific Daylight Time (11:20 GMT) on Tuesday morning. Attack affected only users who downloaded and installed software from bittorrent.com and uTorrent.com during the hour-and-fifty-minute window. Security Shield delivers false reports that a computer is infected with multiple pieces of malware and prompts the user for payment before claiming to disinfect the machine.
Source: https://thehackernews.com/2011/09/utorrent-bittorrent-sites-hacked-spread.html