Refresh Santa section

[drduh]

It is more than a few years old at this point and likely needs a complete overhaul.

[beerisgood]

From your guide:

Santa can be used to only allow trusted code execution, or to blacklist known malware from executing on a Mac

This is already an macOS built-in feature called Gatekeeper.
There is no need to increase the attack surface with a external program.

[kimg45]

Gatekeeper only covers apps while Santa covers all binaries, so it does provide functionality that isn't there in the base operating system.