latest v2.6.7+ also has something iomplemented to make the use of this "tamper data" more difficult, as the arcade also checks the time the game needs to submit the score.
-> this only works for all secured v32/v33 games ! (those with the yellow "!" in the AdminCP Gamelist)
So it is much more difficult as you need to be VERY quick using tamper-data or the session times out