Apple has just released an update to XProtect, bringing it to version 5327. As usual, it doesn’t release information about what security issues this update might address.

This version makes no change to the main Yara rules. However, the recent XPScripts.yr file has been extensively revised, and appears to have come of age. This uses a new private rule OSACompiled, and adds 12 new OSASCRIPT rules to make a total of 14.

You can check whether this update has been installed by opening System Information via About This Mac, and selecting the Installations item under Software.

A full listing of security data file versions is given by SilentKnight and SystHist for El Capitan to Tahoe available from their product page. If your Mac hasn’t yet installed this update, you can force it using SilentKnight or at the command line.

If you want to install this as a named update in SilentKnight, its label is XProtectPlistConfigData_10_15-5327

Sequoia and Tahoe systems only

This update has hasn’t yet been released for Sequoia and Tahoe via iCloud, but should be shortly. If you want to check it manually, use the Terminal command
sudo xprotect check
then enter your admin password. If that returns version 5327 but your Mac still reports an older version is installed, you should be able to force the update using
sudo xprotect update