if you are trying to test for backdoors, just go into your config files, and search for them. It's kind of hard, so if you don't know what your doing, i'm not gonna give a whole explination
kasselschaden Wrote: Basicly, - Read and understand all code you run on your servers. - Do NOT put workshop add-ons on a server directly, unpack and check them instead - Override RunString/RunStringEx/CompileString to prevent running remote HTTP payloads. - maps may have backdoors - encrypted and/or obfuscated code is encrypted and/or obfuscated for a reason, a very bad reason.
For leaks, begin with searching for encrypted code patterns, like _G[, http, RunString(Ex), CompileString, \12\34\56 (regex \\\d+)