Without a moments notice, your life could be thrown into chaos. A thief nabs your laptop. It’s not just that the computer itself is valuable, it’s not even the lost family photos or essays in progress, it’s your passwords, identity information, enough for a savvy thief to ruin your finances. But then you breathe a sigh of relief as you remember that your computer’s hard drive had full-disk encryption enabled. That’s the kind of peace of mind that encryption can offer. Without your master password, you could hand over your hard drive to a would-be thief and rest easy knowing that should they decide to snoop around your hard-drive, all they would be met with is unintelligible gobbledygook.