I know they call functions, but they seem to be built-in functions. I need to know what they do. Found one of them on ROBLOX API refrence: ScriptDebugger:GetGlobals (roblox.com). It’s close, but i dont think its the same thing
That’s the so-called “lua c” syntax used by exploits before FilteringEnabled times. Such kinds aren’t around anymore, nor should you be worried about them if they were, since their capabilities are too limited to do anything other than running small lines of code.
And no you can’t prevent exploits. Just have proper server-sided checks.