> A driver cheat which would auto-inject code on insertion would as far as I know require a 0-day exploit on Windows, and I have a hard time believing one of the cheat devs was sitting on one of those.

Nowadays there's definitely a market for it. eSports is turning in to a multi-billion dollar industry.

0day's can be cheap enough for the type of people willing to risk five figures on CSGO betting, etc.