system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:How does video game anticheat like Vac detect external cheat software on their games?

If I do recall correctly, it is possible for someone to make a cheat that reads memory and makes an overlay on the game without changing any of it in the actual game. So how on earth would anti cheat be able to pick that up?
gpt
While they can check for things like modified game files or memory hacking, anti-cheat software often doesn't limit itself to monitoring the game. As a simple method many programs check what processes you are currently running against a list of known cheat software, for example. Depending on the game there may be things that can be checked by the server, such as items with unusual values or a player dealing abnormal amounts of damage.