how to keep track of XProtect & friends
This little tool will help you keep track of when Apple make changes to system config data like XProtect, Gatekeeper and the Malware Removal Tool. It will also alert you if there is a Security update in the App Store that needs to be manually applied.
Critical Updates is free for home use. Organisations wishing to license it for commercial-scale use should contact me through Sqwarq support.