Addon for E2 Protection? (DarkRP)

Im pretty new to E2 and i have heard a lot about players being able to crash servers, exploit, and dupe money using it.
If that is true, is there a way to prevent those things from happening? I have search all over the web, but have found nothing about E2 protection, only E2 trackers.
And again, I’m really new to E2 and have no idea how it really works.

Go ingame and go to:
Utilities -> Admin Settings -> Group Tool Restriction -> Load groups and members -> default ->
Edit Selected group’s tools -> Chips, Gates -> Expression 2 -> then press the arrow and exit out of the menu and you’re done!