If you're interested, Valve uses deep learning model called VACnet to "watch" every player on their servers[0][1]. If any dodgy gameplay is detected, it gets submitted into a moderation queue called Overwatch[2], which is basically delegates the decisions to ban cheaters community. It's really cool how they've gamified this.

[0]https://www.pcgamer.com/uk/vacnet-csgo/ [1]https://www.youtube.com/watch?v=SnRgW54EWwA [2]https://blog.counter-strike.net/index.php/overwatch/