Valve announced a change for Steam today that will make things a lot clearer for everyone, as developers will now need to clearly list the kernel-level anti-cheat used on Steam store pages.
In the Steamworks Developer post Valve said: "We've heard from more and more developers recently that they're looking for the right way to share anti-cheat information about their game with players. At the same time, players have been requesting more transparency around the anti-cheat services used in games, as well as the existence of any additional software that will be installed within the game."