[Smushman]

Several years ago, on a transatlantic flight, I observed some strange behavior in a game when I specified a high score name with some special characters. I noticed it would crash and exit back to 'home'.

I tried to hack at it by specifying the semicolon and such, but could not get it to do more.

I observed they had it at least mildly secure - it would not accept input for some special characters when typed; they would simply not appear on the screen within the game. But clearly there are holes in these. Without more information on the construction it was not trivial though.