Learn more about security and your Apple Account.
This document lists security updates and Rapid Security Responses for Apple software.
Learn how to set up and use your Apple Account, formerly Apple ID. Find all the topics, resources, and contact options you need for Apple Account.
Apple Pay is designed with your security and privacy in mind, making it a simpler and more secure way to pay than using your physical credit, debit, and prepaid cards. Apple Pay uses security features built-in to the hardware and software of your device to help protect your transactions. In addition, to use Apple Pay, you must have a passcode set on your device and, optionally,...
This document describes the security content of Security Update 2016-001 El Capitan and Security Update 2016-005 Yosemite....
This document describes the security content of macOS Mojave 10.14.2, Security Update 2018-003 High Sierra, and Security Update 2018-006 Sierra....
This document describes the security content of macOS Sierra 10.12.2, Security Update 2016-003 El Capitan, and Security Update 2016-007 Yosemite....
This document describes the security content of macOS Mojave 10.14.1, Security Update 2018-002 High Sierra, Security Update 2018-005 Sierra....
This document describes the security content of macOS Sierra 10.12.5, Security Update 2017-002 El Capitan, and Security Update 2017-002 Yosemite....
This document describes the security content of macOS Catalina 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 High Sierra....
This document describes the security content of macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra....
This document describes the security content of macOS Sierra 10.12.6, Security Update 2017-003 El Capitan, and Security Update 2017-003 Yosemite....
This document describes the security content of macOS High Sierra 10.13.2, Security Update 2017-002 Sierra, and Security Update 2017-005 El Capitan....
This document describes the security content of macOS High Sierra 10.13.6, Security Update 2018-004 Sierra, Security Update 2018-004 El Capitan....
This document describes the security content of macOS Sierra 10.12.1, Security Update 2016-002 El Capitan, and Security Update 2016-006 Yosemite....
This document describes the security content of macOS Mojave 10.14.4, Security Update 2019-002 High Sierra, Security Update 2019-002 Sierra....
This document describes the security content of Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave....
This document describes the security content of macOS Sierra 10.12.4, Security Update 2017-001 El Capitan, and Security Update 2017-001 Yosemite....
This document describes the security content of macOS High Sierra 10.13.3, Security Update 2018-001 Sierra, and Security Update 2018-001 El Capitan....
This document describes the security content of macOS Catalina 10.15.1, Security Update 2019-001, and Security Update 2019-006....
This document describes the security content of macOS Mojave 10.14.6 Supplemental Update 2, Security Update 2019-005 High Sierra, and Security Update 2019-005 Sierra....
This document describes the security content of macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave....
This document describes the security content of macOS Catalina 10.15.7, Security Update 2020-005 High Sierra, Security Update 2020-005 Mojave....
This document describes the security content of macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave....
This document describes the security content of macOS Mojave 10.14.3, Security Update 2019-001 High Sierra, Security Update 2019-001 Sierra....
This document describes the security content of macOS Mojave 10.14.6, Security Update 2019-004 High Sierra, Security Update 2019-004 Sierra....
This document describes the security content of macOS Mojave 10.14.5, Security Update 2019-003 High Sierra, Security Update 2019-003 Sierra....
This document describes the security content of macOS Catalina 10.15.2, Security Update 2019-002 Mojave, and Security Update 2019-007 High Sierra....
This document describes the security content of macOS Catalina 10.15.4, Security Update 2020-002 Mojave, Security Update 2020-002 High Sierra....
This document describes the security content of OS X El Capitan 10.11.1, Security Update 2015-004 Yosemite, and Security Update 2015-007 Mavericks....
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