Encryption is performed using the XTS-AES mode of AES with a 256-bit key, by the CPU. Even on old Macs, you shouldn’t assume that FileVault 1 provides any significant protection to your data.įileVault 2 was introduced in Mac OS X 10.7, and provides whole-volume encryption based on the user password. These caused problems with Time Machine backups, and have proved comparatively easy to crack. In what’s now often referred to as FileVault 1 or Legacy FileVault, only Home folders were encrypted into a sparsebundle. Since Mac OS X 10.3, when Apple released the first version of FileVault, you’ve been able to encrypt some of the contents of internal storage. FileVault is the name Apple gives its features which encrypt stored data, so that no one else can gain access to it.
If your Mac is stolen or lost, the last thing you’d want someone else to have is access to all that data. Most of us keep lots of sensitive personal data stored on our Macs.
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