Your Mac contains more than just files; it’s a repository for personal information, payment data, messages, and online accounts. Keeping that information safe starts with how you log in. For a long time, passwords have been the method of choice for account security, but they also come with significant vulnerabilities. They can be guessed, stolen, and reused across various sites.
Apple’s Passkey system is, importantly, a significant advancement. Unlike traditional passwords that require memorization, passkeys rely on something you possess—like a trusted Apple device—or on your identity, such as your fingerprint or face. Together with iCloud Keychain and two-factor authentication, Passkeys offer a smoother, more secure way to protect your Mac and digital life.
What is a Passkey?
Passkeys serve as a modern substitute for passwords, using public key cryptography to log you in without needing to remember a password. When you create an account using a passkey, your Mac generates two unique keys: one public and stored by the website or app, and one private, safely kept on your device.
The public key isn’t sensitive, but the private key never leaves your Mac and is secured by the device’s security features. When signing in, your Mac uses Touch ID or Face ID to confirm your identity before utilizing your private key for authentication. This method helps prevent phishing attempts and password leaks because no shared secret is transmitted to the website.
How to Use Passkeys for Computer Security
Passkeys are stored and synced through iCloud Keychain, which uses end-to-end encryption. This means that even Apple cannot access your passkeys or passwords. There’s also built-in protection against brute-force attacks, even if unauthorized access to Apple servers occurs.
If you happen to lose your device, recovering your passkey is possible through iCloud Keychain Recovery. You would need to sign in with your Apple ID, verify your identity via a code sent to a trusted number, and then confirm using your device’s passcode. The system limits attempts to recover, locking or destroying the record after too many failed tries.
Moreover, you can set up an account recovery contact to ensure you don’t lose access if your Apple ID password or device passcode is forgotten. This multi-layer protection keeps your data secure, even in extreme situations like a breach of your Apple account or iCloud.
Setting a Passkey on Mac
Getting a passkey set up is straightforward. You’ll need to enable iCloud Keychain first.
- Select the Apple menu and go to System Settings.
- Click your name, followed by iCloud.
- Select Passwords. If you’re on macOS Sonoma or earlier, look for Password and Keychain.
- Click Sync this Mac and then End.
- When signing up for an app or website that allows passkeys, you’ll see the option to create one.
- If your Mac includes Touch ID, place your finger on the sensor for confirmation.
- For nearby iPhone or iPad users, you can also scan a QR code that appears on your Mac using Face ID.
- Existing passwords can be accessed and exchanged for a passkey through the website or app’s account settings.
Once a passkey is created, it will automatically save to your iCloud Keychain and be accessible on all devices signed in with that Apple ID.
Main Services Supporting Passkeys
Passkeys are rapidly gaining traction across major tech platforms. Currently, several large online services allow password-less sign-ins.
- Microsoft
- Apple
- Amazon
- PayPal
- GitHub
- Uber
- eBay
Each month, support for passkeys grows as companies integrate this technology into their login systems, enabling quicker and more secure account access.
Extra Steps to Keep Your Mac Safe
While passkeys enhance security significantly, maintaining good security habits is still vital. Here are some additional ways to fortify your Mac’s defenses.
1) Enable Two-Factor Authentication
Two-factor authentication (2FA) provides an extra layer of security for your Apple ID. It creates a requirement for both a password and a one-time code sent to a trusted device or phone number. So, even if someone manages to obtain your password, they would still need your device to access your account.
2) Check Trusted Devices and Numbers
Make it a point to routinely review which devices and phone numbers are linked to your Apple ID. You can do this by clicking the Apple icon at the top left of your screen, going to System Settings → Apple ID → Device, and removing anything you don’t recognize. Ensure your trusted phone number is current, which is essential for account recovery.
3) Use a Password Manager
As passkeys continue to take over, many sites still depend on traditional logins. Password managers can aid in creating, storing, and entering unique passwords for all your accounts. While iCloud Keychain offers automatic management across Apple devices, a third-party password manager may provide greater flexibility.
Also, check if your email has been compromised in previous breaches. Some top password managers offer built-in breach scanners to see if your email or password appeared in any known incidents. If a match is found, change any reused passwords immediately.
4) Beware of Phishing Scams and Use Strong Antivirus Software
Phishing remains one of the most frequent methods attackers employ to steal personal information. They might send fake emails posing as messages from Apple or other trusted companies, persuading you to click on links or input login details. Always verify sender addresses and avoid dubious links; instead, directly type web addresses into your browser.
Although macOS comes with defenses like Gatekeeper and XProtect, adding robust antivirus software can offer more protection against malware and unwanted programs. Quality antivirus tools continuously monitor your system for suspicious activity and alert you to potential threats. This is particularly beneficial if you download files from outside the App Store.
5) Enable FileVault Disk Encryption
FileVault encrypts everything stored on your Mac, ensuring your data remains safe even if your computer is lost or stolen. You can enable it by navigating to System Settings → Privacy and Security → FileVault.
6) Keep macOS Updated Automatically
Apple frequently rolls out software updates that include crucial security patches. Cybercriminals often target outdated systems, so keeping macOS and apps updated is essential. You can enable automatic updates under System Settings → General → Software Update → Automatic Update.
7) Back Up Using Time Machine
Backing up your Mac is as critical as securing it. Time Machine can automatically back up files to an external drive or network disk. Ensure your backup drive is encrypted for added protection against ransomware or hardware failure.
8) Use a Data Deletion Service
Even with a passkey, your personal data may still be exposed through data broker sites that collect and sell your information. Data deletion services can help remove your data from these sites, effectively reducing your online footprint. While no service can guarantee complete removal, using one can significantly lower the risk of scams that target you with cross-referenced data.
In conclusion, while passwords have been reliable for years, they’re increasingly inadequate for defending our digital identities. Passkeys eliminate vulnerabilities associated with traditional passwords, allowing for quicker, easier, and far more secure login processes. With the added benefits of Apple encryption, iCloud Keychain, and two-factor authentication, using a passkey is a smart approach for securing your Mac and its contents.
