When I still was able to play WarRock, they gave bans only for accounts you hacked with. But if you start playing with punkbuster (start making bypasses and so on) you propably get hw banned, and you cant play any punkbuster game with that computer which you have hw bans. And the result of many bans for single accounts leads to hw ban ( I think). They can also ban every account you log in with, this is mainly because of your behaviour at WarRock forums. I dont know how its nowdays, but it was like that when I were hacking.