KS is an acronym for Kill Stealing. Kill Stealing is when one character has already started to kill a monster and someone else hits that monster without the first users permission or without the first person wanting any help. This results in lose of XP and then the drop is usually stolen from the same thief. As far as Thang GLobal is concerned this is illegal activity and if users get screenshots (SS) by pressing F12 of the offender it will result in the banning of the account for anywhere from 3 days to 3 years accordingly.