Yep. @sjr04 said that exploiters get added into nil so I have to basically rethink my approach.
The best approach to anti-exploit is counter-active, not preventative. Instead of trying to find and stop exploiting scripts before they happen, developers should focus on designing their game around countering exploits for each feature.
I.e if your game has a character for the client that it has control over, use anti-exploit to monitor for suspicious movement