I recently was in a Call Of Duty MW3 Lobby with some friends and a person who goes by the gamertag [REMOVED - DO NOT POST OTHER GTS] was talking descriptively how he was able to mod the lobby. I told him that he shouldnt hack. He told me that i should be quiet and threatened to hack my account and acess all of my information and steal my account. when we played the actual game he froze everyones xbox and was cheating. He then sent me a message after restarting my xbox, it read: That is a warning. So i got my friends to help file complaint and avoid player along with block communications but i was unable to avoid player which was very odd. I invited him to a party to talk about how he is doing something that goes against the xbox live terms of service and he said i could call microsoft and try to get him banned or temperarely suspended. He told me that it didnt matter because he had a homemade device and jtag to stop that from happening. I would really appreciate it if he was able to be stopped so he will be unable to mod and cheat again. My gamertag is iTz v Jesus if you have questioins.