exe. speed hack, running in his pc, server doesnt see it, PB can be patched to fix that type of hack, but the hack has to be sent to PB .
We will never , sadly, be rid of people actually create or modify code, but for the wannabes PB usually hammers them.
Even some of them slip through, but most of the time there so useless they need a hack just to get of the bottom of the score chart ! LOL !