As part of its continued endeavor to curtail cheating in Battlefield 3, DICE has spruced up the anti-cheat measures for the online multiplayer part of this game. According to a post on the official Battlefield 3 blog, the developer has apparently banned a batch of several hundred cheaters acting on confirmed reports and player behavior data.
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http://www.gameguru.in/first-person-shooters/2012/16/battlefield-3-anti-cheat-measures-beefed-up/