How secure is FileVault?

Answer

landon
Vote Up (6)

FireVault II is as secure as your password for the most part. It uses 128-bit AES encryption. If someone got hold of your Mac and didn't have your FireVault password, they might be able to boot it from an external drive, but that would only let them reach the non-encrypted portions of your system (which at least in the original FireVault was all the stuff that is not in your home folder. 

http://support.apple.com/kb/HT4790

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