My MacBook Air has 4 user accounts on it: for me, my wife, my son, and my mother-in-law (long story). My wife and I both use secure passwords, but my mother-in-law and son do not.

The full-disk encryption system called FileVault, introduced way back in Mac OS X 10.7 Lion, keeps the data on your drive encrypted at rest. If your Mac is shut down, a malefactor can’t get at ...

If necessary, you can restart a FileVault-enabled Mac and have it automatically unlock the volume and load the operating system. Topher, an avid Mac user for the past 15 years, has been a ...