With macOS 10.14 Mojave, Apple has beefed up the Mac’s privacy so it more closely resembles privacy in iOS. You’ve noticed that when you launch a new app on your iPhone or iPad, it often prompts for access to your photos or contacts, the camera or microphone, and more. The idea behind those prompts is that you should always be aware of how a particular app can access your personal data or features of your device. You might not want to let some new game thumb through your photos or record your voice.
macOS has been heading in this direction, but Mojave makes apps play this “Mother, May I?” game in more ways. As a result, particularly after you first upgrade, you may be bombarded with dialogs asking for various permissions. For instance, when you first make a video call with Skype, it’s going to ask for access to the camera and the microphone. Grant permission and Skype won’t have to ask again.
Skype’s requests are entirely reasonable—it wouldn’t be able to do its job without such access. That applies more generally, too. In most cases, apps will ask for access for a good reason, and if you want the app to function properly, you should give it access.
However, be wary if a permission dialog appears when:
There’s no harm in denying access; the worst that can happen is that the app won’t work. (And if it’s malicious, you don’t want it to work!) You can always grant permission later.
To see which permissions you’ve granted or denied, open System Preferences > Security & Privacy > Privacy. A list of categories appears on the left; click one to see which apps have requested access. If you’ve granted access, the checkbox next to the app will be selected; otherwise it will be empty.
You’ll notice that the lock in the lower-left corner is closed. To make changes, click it and sign in as an administrator when prompted.
Most of these categories are self-explanatory, but it might not always be obvious why an app wants permission. In the screenshot above, for instance, Google Chrome has been granted access to the Mac’s camera. Why? So Google Hangouts and other Web-based video-conferencing services can work.
There are five categories (including three not showing above) that could use additional explanation:
So if you’ve been seeing repeated requests for permission after you upgraded to Mojave, now you know why these dialogs keep popping up. They’re a bit annoying at first, but the added privacy is worthwhile, and once you’ve granted permission to an app, you shouldn’t hear from it again.