[MacTUG] How to Prevent Gatekeeper Turning Back On Automatically in OS X | OSXDaily

[Marlon A. Griffith]

"""
When you turn Gatekeeper off, it only stays off for 30 days. This can be
annoying if you’re the type who knows what you’re doing in OS X. To
disable this function, open up Terminal (Applications > Utilities) and
type in the following command:

sudo defaults write /Library/Preferences/com.apple.security GKAutoRearm
-bool NO

Tap Enter, then type in your password. Gatekeeper will now say disabled
until you manually enable it.

http://osxdaily.com/2015/11/05/stop-gatekeeper-auto-rearm-mac-os-x/
"""