Hackers hack hackers to steal their hacking tools and deflect blame

Rule #1 of hacking is "attribution is hard" (other contenders: "don't be on fire," "don't get involved in a land-war in Asia" or "there is no security in obscurity"), which is to say, it's really hard to say who hacked you, in part because it's really easy for hackers to make it look like someone else did the deed. (more")