They are conducting ban waves in EU and KR. I guesss NA could be next. Oh well, if they did then we rebuild. But if you hack, they will probably find out as it is impossible to avoid detection completely. Many players here in NA claim they've never been banned but that's because Nexon never really ban NA hackers...yet, except for those involved in the item creation hack. If they matched my marketplace forum IP with my game IP, I would be instantly banned because I don't use a proxy and it's the same IP. Also, the leaderboard has a "rocheste carriage usage" counter so many hackers will probably have only 1. So there are many ways to find hackers.
So yeah, if you hack, always be prepared to get banned as there is no way to avoid detection completely. You can do things to minimize exposure but still...