Catalina - Disable Messages App

Information

The macOS built-in Messages.app _MUST_ be disabled.

The Messages.app establishes a connection to Apple's iCloud service, even when security controls to disable iCloud access have been put in place.

Solution

This is implemented by a Configuration Profile.

mobileconfig profile info:

com.apple.applicationaccess.new:
familyControlsEnabled:
True
pathBlackList:
/Applications/Messages.app

See Also

https://github.com/usnistgov/macos_security