Apple has released a security update for OS X Lion and Mountain Lion, Security Update 2013-003 (Lion). Apple's security update Knowledge Base article has not been updated with details about the release, but changes should appear soon. About Security Update 2013-003 (Lion) Security Update 2013-003 is recommended for all users and improves the security of OS X. For information on the security content of this update, please visit this website: http://support.apple.com/kb/HT1222The update is available through the Mac App Store and Apple's software download website.