Took a look at the Nexon "careers" page

This has actually helped me gain insight into some process that GMs go through towards banning. I usually screenshot hackers in action using things like kami/dupex however I guess getting video footage would be even more damning evidence. Though some are pretty set-in-stone kinda obvious even in screenshots. The majority have CC hacks also which makes it quite hard to catch them though it usually just sets it to a different channel same area so surfing a bit makes it easy. Due to load lag it is best to enter an area before the one you want to check because it loads faster than just CC in the same area. If you did that then you'd never catch one in the act except seeing a red dot on your map.