lets say for the last hack GMs' roam around the dungeon rooms to watch how you play the game. they can enter the room as spectators so in short they are invisible. they will just watch you play and leave as soon as they're done watching and banned a player if they got caught..2nd is do not make any mistakes using the hack and follow the instructions of the hack makers..
how can be avoided?
don't be so careless using the hack and don't be so obvious...and one more thing don't let anyone join you in a dungeon room when playing..just to be safe..hehe..^_^