[rdtsc]

That reminded of a network security class I took. The goal was to hack the protocol of a game server and win points (we could run a packet sniffer or something like that). Instead I hacked the game server itself, got root on it, and injected a hack in the game server source to give our an advantage. Some people were upset, however we still won. I argued, that is how real security works. It is some seemingly unrelated backdoor or weakness that lets the attacker in.