What do hackers use for noclip?

Im about to start development on my anti exploit script, does anyone know what noclippers use.

Most of them use cancollide and some of them use a humanoid signal (pretty sure signal is not the right word)- if you’re going to try to prevent noclip, do it on the server. Doing it on the server also means you can’t just do if part.CanCollide == false then