CM... it is ridiculous as it sounds, though. What is your answer to stop them? Stop banning them? Let them spar in the streak room to 4,000 spars because "banning them won't stop them from just doing it again anyways"? What are you saying exactly? That banning hackers isn't an effective way to deal with them? Then what is? Shutting down iClassic?
It's extremely easy to spectate spar arenas, towers, pyrat bay (and more) then continually ban people who are hacking. If they change their IP then they usually come on within the next 10 minutes or so. For an experienced player like Kosiris (for example) spotting that kind of thing is extremely easy and if he is constantly active in those areas (which he is), then it's even easier!