Software & Apps

New security features in macOS Mojave

Posted on November 9th, 2018 by

macOS Mojave doesn’t have a lot of visible new features, aside from the new dark mode, but under the hood there are plenty of changes to make the operating system faster, more stable, and more secure. In this article, I’m going to discuss some of the new security features that make Mojave easier to use safer and securely.


As in iOS 12 – read this article about the new security features in Apple’s mobile operating system – macOS Mojave brings a number of new features around passwords that will help make your computing more secure. Together with the keychain, which stores your passwords and which can sync them with your other Apple devices using iCloud Keychain, Safari now suggests and stores strong passwords when you create an account on a website.

If you have had a tendency to reuse passwords in the past – this isn’t a good idea – you can check Safari’s preferences. Click the Passwords icon in the toolbar and you’ll see a yellow alert icon where you’ve used the same password more than once.

Be aware that these alerts don’t always indicate a problem. You may have a password stored for,, and because of the way you have had to navigate certain sites. If that’s the case, don’t worry about the alerts.

If you use two-factor authentication on websites, Safari will now automatically insert the codes you receive by SMS into the appropriate fields, as it can do on iOS 12. This works with apps that have been updated to support the feature.

New permissions

As we discussed in this article, you’ll be seeing a lot of dialogs asking for your permission. While not new, these alerts are now displayed for more situations when software wants to control your computer in some way. You’ll also get specific alerts when an app wants to access the camera or microphone as has been the case in iOS for many years.

In addition, the T2 chip in the new MacBook Air and the MacBook Pro with touch bar disables the microphone on the MacBook Air when its lid is closed. This chip is also in the iMac Pro and the recently updated Mac mini, and is used for other security features such as biometrics (Touch ID).

Privacy protection

Safari now limits how websites can fingerprint and track your activity. Fingerprinting is when a website creates a profile about you which is generally shared with advertisers. Safari’s Intelligent Tracking Protection, also included in iOS 12, prevents a lot of this, limiting the ability of advertisers to display targeted ads when you visit websites. Safari has also enhanced its tracking protection so websites and cookies can’t follow you around as you surf the web, especially when they come along with like buttons, share buttons and comment forms.

These are the most obvious new security and privacy features in macOS Mojave. There are others under the hood that ensure that the apps you use are from legitimate developers, and Apple has planted the seeds of an even more reinforced approach to validating apps that may become obligatory on the future. (They call this new review process “notarization.”)

If you haven’t updated to macOS Mojave and your Mac is compatible, you should do so now. These new security features make your computing safer.

About Kirk McElhearn

Kirk McElhearn writes about Apple products and more on his blog Kirkville. He is co-host of the Intego Mac Podcast, as well as several other podcasts, and is a regular contributor to The Mac Security Blog, TidBITS, and several other websites and publications. Kirk has written more than two dozen books, including Take Control books about Apple's media apps, Scrivener, and LaunchBar. Follow him on Twitter at @mcelhearn. View all posts by Kirk McElhearn →