Anti-Backdoors

If you don't have any money, and you need to download leaked addons, use CPE Menu, it's on the steam workshop, this addon will tell you if you have a backdoor, where is it (in which line of the .lua text it is and what file contains it) and blocks it. You can also authorize some certain addons if you have a false positive. You're welcome.

Doesn't Valve check for this already?

Okay thanks for the information bro

thansk bro for this been looking for something like this

can this addon view backdoors on all files?

Or you can check it yourself like find a Npc.vtf or in the autorun folder a Runstring

Well thanks for the information, I will use it in my stuff

There is a free mod on steam workshop - SNTE, the best fix for all your backdoor problems on the server. It is constantly updated and fixed, improving protection. (no, this is not an advertisement :D )