The T2 kicks in when you launch your Mac and the Apple logo appears. It acts as the root of trust and validates the entire boot process, checking security components and verifying legitimacy as it. Apply security updates and system software upgrades as soon as they become available. And remember that a Mac can carry a virus and pass it to other computers even if it is not affected itself. Check for updates by going to the System Preferences application. The Apple T2 Security Chip — included with many newer Mac models — keeps your Mac safer than ever. The Secure Enclave coprocessor in the Apple T2 chip provides the foundation for Touch ID, secure boot, and encrypted storage capabilities. Touch ID gives you a seamless way to use your fingerprint to unlock your Mac, fill passwords in Safari, and make purchases with Apple Pay. Enable the OS X firewall. The firewall in OS X is a network filter that allows you to control which.

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Prepare Your Institution for iOS 13 or macOS Catalina

If you’re a system administrator, review these documents to prepare for iOS 13 and macOS Catalina.

End-of-Life for SHA-1 Certificate Support

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In 2017, a security update to Apple’s operating systems removed support for SHA-1 signed certificates used for Transport Layer Security (TLS) in Safari and WebKit. Make sure to use SHA-256 signed certificates.

Making Secure Connections

A range of APIs on Apple platforms enable your apps to employ secure network connections and to benefit from OS-level security policies.

App Transport Security (ATS)

ATS establishes best-practice policies for secure network communications using Apple platforms, employing Transport Layer Security (TLS) version 1.2, forward secrecy, and strong cryptography.

Secure Transport API

Use Apple’s secure transport API to employ current versions of the Secure Sockets Layer (SSL), Transport Layer Security (TLS), and Datagram Transport Layer Security (DTLS) cryptographic protocols for network communications.

Supported Algorithms

Starting with iOS 10 and macOS v10.12, the RC4 cipher suite is disabled by default. In addition, Apple recommends that your servers use certificates signed with the SHA-2 cryptographic function.

DeviceCheck and the App Attest API

Protect against security threats to your iOS apps and reduce fraudulent use of your services by managing device states and asserting app integrity. The DeviceCheck services provide information that you can integrate into an overall anti-fraud strategy for your app and risk assessment for a given device.

Using the DeviceCheck service, a token on your server can set and query two binary digits of data per device — for example, to flag a device you‘ve determined to be fraudulent — while maintaining user privacy. And with App Attest, you can generate a special cryptographic key on a device running iOS 14 or later, and use that key to validate the integrity of your app before your server provides access to sensitive data.

Certificate Transparency and Certificate Trust APIs

Strong encryption for your network connections is not enough. To help ensure your app is connecting to the right server, employ Apple’s certificate trust APIs and Certificate Transparency.

Mac Computer Security

Protecting User Data

Apple platforms provide a variety of features for protecting user data.

Purpose Strings

Purpose strings let you statically declare the sensitive data and resources your app employs.

Copying and Pasting Sensitive Data

Copying and pasting sensitive data in iOS can take advantage of privacy options.

Keychain and iCloud Keychain

Keychain and iCloud Keychain provide a secure repository for sensitive user data, such as certificates, keys, passwords, and notes.

App Sandboxing

Protect Mac systems and users by limiting the privileges of an app to its intended functionality, increasing the difficulty for malicious software to compromise users’ systems.

Executing Code Securely

Apple platforms protect users with secure code execution. Xcode, Apple’s integrated development environment (IDE), directly provides code signing for iOS, watchOS, and tvOS apps, as well as for macOS apps that you distribute through the Mac App Store.

Sign Your Apps with Developer ID

Gatekeeper on macOS helps protect users from downloading and installing malicious software distributed outside the Mac App Store by checking for a Developer ID certificate.

Notarize Your Apps

If distributing your Mac app outside of the Mac App Store, sign and upload your app to Apple to be notarized to certify your app is genuine and to perform a security check.

Cryptographic Interfaces

Apple platforms offer a comprehensive set of low-level APIs for developing cryptographic solutions within your apps.

Apple CryptoKit

Perform cryptographic operations securely and efficiently in your app.

Common Crypto Library

The Common Crypto library supports symmetric encryption, hash-based message authentication codes, and digests.

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CryptoTokenKit for Smart Card Support

The CryptoTokenKit framework provides first-class access for working with smart cards and other cryptographic devices in macOS.

SecKey API for Asymmetric Keys

SecKey provides a unified asymmetric key API across Apple platforms.

Security Fundamentals and Resources

These resources provide background information and support for security on Apple platforms.

corecrypto

Both Security Framework and Common Crypto rely on the corecrypto library to provide implementations of low level cryptographic primitives. This is also the library submitted for validation of compliance with U.S. Federal Information Processing Standards (FIPS) 140-2 Level 1. Although corecrypto does not directly provide programming interfaces for developers and should not be used by iOS or macOS apps, the source code is available to allow for verification of its security characteristics and correct functioning.