Today I was playing "Modern Warfare 2" When I came across a guy whos gamer tag was; [Mod Edit] . He claimed to have known a riot shield glitch. So he did it to me and my friend and isntantly our xbox's froze and controllers began to vibrate. He is tampering with many people and their xbox's and this could harm their xbox's. My xbox was not harmed but I am sure this is an issue that could harm them.