If you want to experiment with these features without risking your account or PC, use legitimate methods within the game: How to Use Safely
outside of Garry's Mod to "inject" the code. How to Get GMOD for FREE on Steam Garry's Mod Hacks (ESP, Aimbot & viЕЎe) Besplatn...
or add an exclusion for an .exe file. Complete "offers" or surveys to get a download password. If you want to experiment with these features