Vanguard takes screenshots of your PC every time you play a game. Every time you play a game a function is called to screenshot your PC’s screen, in case Vanguard thinks you might have something suspicious, it screenshots your ENTIRE PC screen (all monitors).
Edit: Not trying to spread false info this was shared to me via a friend and there is other data to back up that this is real https://www.unknowncheats.me/forum/anti-cheat-bypass/634974-vanguard-taking-screenshot-pc.html
https://www.unknowncheats.me/forum/valorant/484475-vanguard-screenshots.html
Hypixel is fucking massive and finances this purely of off cosmetics for the most part, with Hypixel having developed their own custom server-side anticheat solution
Oh, they also don’t use neural networks for this.
They’re big but not even close to goliaths, their 24h online is at 40k more or less, which is nothing like CSGO or apex… Their all time high is less than apex daily active sadly.
I’m not saying their system is bad, but I am saying that it is still not tested for a large scale though.