Useful tool:
https://github.com/SummitRoute/osxlockdown
https://objective-see.com/products/lockdown.html
Useful resources:
This project pulled from numerous resources including:
https://github.com/drduh/OS-X-Security-and-Privacy-Guide
DISA's STIG for Apple OSX 10.10: http://iase.disa.mil/stigs/os/mac/Pages/index.aspx
https://github.com/jackiesingh/Mac-OSX-STIG
The IRS Safeguard Computer Security Evaluation Matrix (SCSEM) safeguards-scsem_MacOSX10.8.xlsx
CIS Apple OSX 10.10 Benchmark
Articles from https://derflounder.wordpress.com/
Apple's Mac OS X Security Configuration For Mac OS X Version 10.6 Snow Leopard