If you have a server or other remotely accessed Mac, you can use a couple of approaches to encrypt the hard drive.
As an added measure of security, you can prevent your Mac from storing FileVault encryption keys for the purpose of speeding wake times from standby mode.
Given Apple-supplied password reset tools, you may have concerns about the possibility of these being used to override a FileVault-protected volume.
If necessary, you can restart a FileVault-enabled Mac and have it automatically unlock the volume and load the operating system.
Without an intact Recovery HD partition on your Mac, you will not be able to use Apple's FileVault disk encryption feature.
If you're wondering how FileVault disk encryption for OS X will work with your existing drive setup, and more, MacFixIt has answers.
A debugging error that left some users' passwords stored in plain text in OS X 10.7.3 has been closed in OS X 10.7.4.
Since the news of Passware being able to decrypt FileVault over FireWire connections, Mac users might be concerned about the integrity of the security on their computers.
Apple's FileVault 2 whole-disk encryption can be unencrypted within an hour, according to encryption and password-recovery company Passware.
A bug in OS X 10.7.3 exposes legacy FileVault users, but there are some workarounds to prevent this from happening.