On a Unix-based operating system, such as OS X, each user has an account. This means that even administrators can’t change or delete these files. This technology ensures that system files can only be modified by the Installer app, or by software updates that are installed through the App Store app. This sounds quite technical, and it is, but System Integrity Protection, or Rootless, makes your Mac much more secure. So, if you’ve already updated your iOS devices to iOS 9, and you’re updating your Mac to El Capitan, then you can turn this on. Note that with the new Apple two-factor authentication, you should be running OS X El Capitan and iOS 9 on all your devices. Apple will contact you and ask you a number of questions, so you can prove that you are, indeed, you, and have not been replaced by an alien or a cyborg. If this happens, go to and follow the instructions. If, however, you get locked out of your account, it can take several days for Apple to reinstate it. It’s a good idea to turn on two-factor authentication, especially now that the process is a bit simpler. This presented a number of problems, however, such as people not saving it, losing it, or not being in the location where it was stored when they needed to access it. Previously, you had to save a recovery key, a long string of characters that Apple suggested you print out and store in a safe place. Two-Factor AuthenticationĪpple has offered two-factor authentication for some time ( here’s how you set it up), but with the release of iOS 9 and OS X El Capitan, Apple is changing the way this works. See that previous article to learn how to set your Mac’s basic security settings.īut Apple has incorporated several security features into OS X 10.11, some of which are quite important. None of these features have changed in fact, if you compare the Security & Privacy pane of System Preferences, you won’t see any differences. Last year, when OS X 10.10 was released, I wrote an overview of Yosemite’s security and privacy features. In OS X El Capitan, there are a few key security and privacy features that will make Macs much harder to attack, and that will protect your data. In addition to the widely-publicized features in a new operating system, there are always under-the-hood improvements that make the upgrade worthwhile. I’ve only tested El Capitan on recent Macs, but if you’re hesitant, wait a week or so and see what the various Mac websites report about its speed on older Macs. ![]() Keep in mind that, historically, when Apple released a “revision” version of OS X, such as Mountain Lion or Snow Leopard, these newer operating systems were as fast, or even faster than their predecessors. If you have older hardware, you may hesitate, thinking that El Capitan might slow down your Mac. El Capitan will run on all Macs that can run Yosemite, so if you’re running OS X 10.10, you should consider upgrading to OS X 10.11. OS X El Capitan is now available, and it’s time to upgrade your Mac to Apple’s new operating system, if you so desire. Apple + Recommended + Security & Privacy OS X El Capitan: Security and Privacy Features Overview
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