I recently received Gatekeeper Configuration Data 14.0 installed automatically without any notice on my MBP, it's not shown on the normal "Software Update" list. But can be found via Apple > About This Mac > More Info > System Report > Installations. (OS X 10.8.5)
Did anyone else receive that too? and what is it for? I checked few other Macs none of them have it.
UPDATE: this is a quicker way to check it - click the Apple icon on the top menu, press and hold the alt/option key, it turns "About this Mac" to "System Information" then click.