Where are the backdoors in a Gmod Addon?

I'm downloading some Gmod addons and I need to know where are the backdoors. Ty

You Can use cpe anti backdoor in the workshop or you Can use nomalua antibackdoor.

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But they cant give you 100% result, but they relly Can help you

check through the code, it is that simple and easy if you know what a backdoor somewhat looks like

My experience in finding them- it's usually in autorun or luaconfigs. you'll know when you see it, even with untrained eyes