The folks over at Microsoft are not pleased about the leaks that have been circulating with Halo 4.   Over the weekend a Microsoft spokeman gave a statement about the situation.  And from  his statements it may seem Microsoft maybe looking into legal action.

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We are aware of isolated cases in which ‘Halo 4’ content has been propped on the Web and are working closely with our security teams and law enforcement to address the situation immediately.

Consumers should be aware that piracy is illegal and we take vigorous action against illegal activity related to our products and services. Playing pirated copies of games, such as ‘Halo 4,’ is a violation of the Xbox LIVE Terms of Use and will result in enforcement action, such as account and console bans.

Illegitimately obtained copies of Halo 4 have leaked to the public. Gameplay videos, including full level play-throughs and cutscenes, as well as the ending, have started circulating online — so if you’re hoping for Halo 4’s secrets to stay secret, avoid message boards, Twitter, and YouTube. Internet users, some genuinely excited and others just plain malicious, are sharing various spoilers to their followers

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