Apple has released the latest Security update for Mac OS X. Login to the App Store to download the latest update 2017-001 10.11.6
New Features in the Latest Version of Mac OS X Security Update:
*Security Update 2017-001 is recommended for all users and improves the security of OS X.
*For more information on the security content of this update see http://support.apple.com/kn/HT201222
Download Link to Security Update