I do not know if it was a hack but something did happen tonight on live. When I has in a full GTAV lobby people were dropping out left and right then I lost connection and my friend was having trouble loading downloaded games and when he contacted Xbox live services they just told him it was a hardware issue. I don't know if it was a hack or not but I know for sure something happened tonight on Live but something did happen for sure.
So you are telling me Live had another glitch last night and went down for a reason that was resolved last month. I don't know if it was a hack or just another xbox blunder but there was something last night.