Ok it's hard to explain unless you're clued up on the way computers connect to the net, lame ass surfers, hackers, use what is known as a floating IP which basically means the IP they use when they connect to the net is a fake one, and when they connect again a different IP is displayed. If you're like me and you wanna pass all this stuff and get there IP you can get it lol, Nova Logic should have this kind of software seen as they run their own servers.
Thus enabling them to put a timed ban onto the cheaters IP, very basic like I said but only if you understand IP's and connections lol