OS X Tiger 10.4 (April 2005)
- Added Download Validation
- Added Access Control Lists (ACLs) Ars TechRepublic
- Added file extended attributes (xattr)
OS X Leopard 10.5 (October 2007)
- Added File Quarantine
- Added ability to code sign
OS X Snow Leopard 10.6 (August 2009)
- Added XProtect ("safe downloads lists")
OS X Lion 10.7 (July 2011)
- Added FileVault 2 (Full Disk Encryption)
- Improved ASLR
- Added App Sandbox
- Removed Rosetta (PowerPC Support)
OS X Mountain Lion 10.8 (July 2012)
- Added Gatekeeper
- Also present in final version of OS X Lion (
10.7.5)
- Also present in final version of OS X Lion (
- Added Location Services
- Improved App Sandboxing
- Improved XProtect (September)
- Blocks outdated Flash and Java browser plugins
- Backported to Lion and Snow Leopard
OS X Mavericks 10.9 (October 2013)
- Added iCloud Keychain
- Added requirement for Kexts to be signed
- Added SMB2 suppoort
- Default file sharing protocol
OS X Yosemite 10.10 (October 2014)
- ¯_(ツ)_/¯
OS X El Capitan 10.11 (September 2015)
- Added System Integrity Protection (SIP)
- Added App Transport Security (ATS)
- Updated XProtect (January 2016)
- Blocks outdated Silverlught browser plugin
- Backported to Yosemite (
10.10), Mavericks (10.9), Mountain Lion (10.8), Lion (10.7) and Snow Leopard (10.6)
macOS Sierra 10.12 (September 2016)
- Updated Gatekeeper
- Remove install from anywhere
- Added ability to sign disk images (
.dmg) - Added path randomisation
- Removed support for VPN Point-to-Point Tunneling Protocol (PPTP)
macOS High Sierra 10.13 (September 2017)
- Added weekly firmware integrity checks
- Changed File System to Apple File System (APFS)
- Removed support for SHA1 TLS Certificates
- Added requirement for user appoval of Kext loading