when i was playing the new modernwarfare 2 on the 15/2/10 I was hacked and lost all my gamerscore that i unlocked and all my online achievemants and score a nd plus my xbox live. The boy i think thata hacked me is -- lvl RIOTS lvl and i know that he hacked other people on the same night coz i was in the party with 1 of my friends and he sent us a blank voice messages which hacked us and nw iv lost live, gold membership and everything else. Please can you help me sort this out. thanks