Leaked on the InternetI had no idea Microsoft did this, but they put the review code for their games on x-box live so that game sites can download and play it early. It saves them the cost and effort of sending discs to everyone. Anyways, modders broke MS's security, that prevents us from seeing these games on x-box live, and downloaded Halo : Reach. They claim to just wanted to play it, and aren't going to be leaking it torrent sites. But im sure right now at MS's headquarters some dude just got fired.
Either way Bungie strongly urges everyone to stay off the net until Reach is released now. I guess something huge is in the single player and they don't want us to know about it.