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/kb/HT1222
See http://support.apple.com/kb/HT5044 article for details on how to verify the authenticity of this download.
Post Date: Mar 27, 2017
File Size: 495.2 MB
OS X Yosemite 10.10.5