
Document revision history
December 2024
Topics added:
Topics updated:
Topics updated that include only Optic ID, Apple Vision Pro or visionOS
Optic ID additions:
Apple Vision Pro additions:
visionOS additions:
May 2024
Topics added:
Topics updated:
December 2022
Topics added:
Topics updated:
May 2022
Updated for:
- iOS 15.4 
- iPadOS 15.4 
- macOS 12.3 
- tvOS 15.4 
- watchOS 8.5 
Topics added:
Topics updated:
Topics removed:
- HomeKit accessories and iCloud 
May 2021
Updated for:
- iOS 14.5 
- iPadOS 14.5 
- macOS 11.3 
- tvOS 14.5 
- watchOS 7.4 
Topics added:
Topics updated:
- Added two new Express Mode transactions in Express Cards with power reserve. 
- Edited Secure Enclave feature summary. 
- Software update content added to Secure Multi-Boot (smb3). 
- Additional content for Sealed Key Protection (SKP). 
February 2021
Updated for:
- iOS 14.3 
- iPadOS 14.3 
- macOS 11.1 
- tvOS 14.3 
- watchOS 7.2 
Topics added:
Topics updated:
April 2020
Updated for:
- iOS 13.4 
- iPadOS 13.4 
- macOS 10.15.4 
- tvOS 13.4 
- watchOS 6.2 
Updates:
- iPad microphone disconnect added to Hardware microphone disconnect. 
- Data vaults added to Protecting app access to user data. 
- Updates to Managing FileVault in macOS and Command-line tools. 
- Malware Removal Tool additions in Protecting against malware in macOS. 
- Updates to Shared iPad security in iPadOS. 
December 2019
Merged the iOS Security Guide, macOS Security Overview and the Apple T2 Security Chip Overview
Updated for:
- iOS 13.3 
- iPadOS 13.3 
- macOS 10.15.2 
- tvOS 13.3 
- watchOS 6.1.1 
Privacy Controls, Siri and Siri Suggestions, and Safari Intelligent Tracking Prevention have been removed. See https://www.apple.com/uk/privacy/ for the latest on those features.
May 2019
Updated for iOS 12.3
- Support for TLS 1.3 
- Revised description of AirDrop security 
- DFU mode and Recovery mode 
- Passcode requirements for accessory connections 
November 2018
Updated for iOS 12.1
- Group FaceTime 
September 2018
Updated for iOS 12
- Secure Enclave 
- OS Integrity Protection 
- Express Card with power reserve 
- DFU mode and Recovery mode 
- HomeKit TV Remote accessories 
- Contactless passes 
- Student ID cards 
- Siri Suggestions 
- Shortcuts in Siri 
- Shortcuts app 
- User password management 
- Screen Time 
- Security Certifications and programmes 
July 2018
Updated for iOS 11.4
- Biometric policies 
- HomeKit 
- Apple Pay 
- Business Chat 
- Messages in iCloud 
- Apple Business Manager 
December 2017
Updated for iOS 11.2
- Apple Pay Cash 
October 2017
Updated for iOS 11.1
- Security Certifications and programmes 
- Touch ID/Face ID 
- Shared Notes 
- CloudKit end-to-end encryption 
- TLS update 
- Apple Pay, Paying with Apple Pay on the web 
- Siri Suggestions 
- Shared iPad 
July 2017
Updated for iOS 10.3
- Secure Enclave 
- File Data Protection 
- Keybags 
- Security Certifications and programmes 
- SiriKit 
- HealthKit 
- Network Security 
- Bluetooth 
- Shared iPad 
- Lost Mode 
- Activation Lock 
- Privacy Controls 
March 2017
Updated for iOS 10
- System Security 
- Data Protection classes 
- Security Certifications and programmes 
- HomeKit, ReplayKit, SiriKit 
- Apple Watch 
- Wi-Fi, VPN 
- Single sign-on 
- Apple Pay, Paying with Apple Pay on the web 
- Credit, debit and pre-paid card provisioning 
- Safari Suggestions 
May 2016
Updated for iOS 9.3
- Managed Apple Account 
- Two-factor authentication for Apple Account 
- Keybags 
- Security Certifications 
- Lost Mode, Activation Lock 
- Secure Notes 
- Apple School Manager 
- Shared iPad 
September 2015
Updated for iOS 9
- Apple Watch Activation Lock 
- Password policies 
- Touch ID API support 
- Data Protection on A8 uses AES-XTS 
- Keybags for unattended software update 
- Certification updates 
- Enterprise app trust model 
- Data Protection for Safari bookmarks 
- App Transport Security 
- VPN specifications 
- iCloud Remote Access for HomeKit 
- Apple Pay Rewards cards, Apple Pay card issuer’s app 
- Spotlight on-device indexing 
- iOS Pairing Model 
- Apple Configurator 2 
- Restrictions