Players used to consistently rename their ships to get around RP consequences (e.g. smuggler ship caught by lawfuls, rather than face the loss of docking privileges and/or breathtaking fine, simply rename) or to put one over on playerlist watchers (people actually pirating for financial gain renaming every time they got a bite). The community shrank, so now it's a case where in most circumstances, one can easily identify the player pirating them, instead of just them being a ship on the playerlist. If player [X] is active at [Y] time, and they're in [Z] system, chances are they're laying in wait to pirate anyone passing through there.