Gabe Newell: Valve, VAC and trust
For a game like Counter-Strike, there will be thousands of cheats created, several hundred of which will be actively in use at any given time. There will be around ten to twenty groups trying to make money selling cheats. We don’t usually talk about VAC (our counter-hacking hacks), because it creates more opportunities for cheaters to attack the system (through writing code or social engineering). This time is going to be an exception. Cheat versus trust is an ongoing cat-and-mouse game. New cheats are created all the time, detected, banned, …