What you need to do... Install CPE and Notepad++ Then restart your server after installing CPE Then you need to type "cpe_menu" in console. (This is where the common sense comes in :o) Check for any backdoors. There are at least a couple of false positives with CPE in DarkRP. Now, go to there line that is listed. And literally just delete it. Make sure to backup the addon incase you fuck up.
Boom, Your done, CPE has only missed 1 backdoor ever for me. In about 2 years of use. So I wouldn't worry about that too much.
If you guys have any questions or want to protect yourselves further just shoot me a message or replay to this thread. Good Luck!