my friend is also a hacker. Heres what he did in one game called Maplestory...
So yeah. He would go around deleting random peoples acounts.. Also, he would threaten people to trade stuff to him for free or he would delete them.
Soon the admins on there had to try and find him and delete him. But when the admins came, he deleted them. So know he cant leave the game unless he turns it off, cause if he even left to go to the bathroom, chances are his account would be deleted.