How to check XProtect and MRT versions running Big Sur?
Gatekeeper /usr/libexec/PlistBuddy -c "Print CFBundleShortVersionString" /private/var/db/gkopaque.bundle/Contents/Info.plist XProtect defaults read /Library/Apple/System/Library/CoreServices/XProtect.bundle/Contents/Info.plist CFBundleShortVersionString MRT (Malware Removal Tool) defaults read /Library/Apple/System/Library/CoreServices/MRT.app/Contents/Info.plist CFBundleShortVersionString