If you lose your laptop, how secure are your passwords?
If you allow applications to save your passwords, anyone with physical access to your PC can decode them unless you're properly encrypting them—and chances are pretty good you're not. Let's walk through the right and wrong ways to store your passwords.
For the purpose of this article, we'll assume that the people you allow into your house are trustworthy enough not to hack your passwords, and your laptop has been stolen instead—but the tips here should apply to either scenario. Regardless of how you choose to save your passwords, you should make sure to use great passwords and even stronger answers for security questions. It doesn't even matter all that much if you've got a tough Windows password; anybody with physical access to your PC can use an Ubuntu Live CD to copy all of your data onto an external drive without modifying anything, and crack your files on another machine whenever they please (assuming you don't have your entire hard drive encrypted). If they had a little more time, they could use Ophcrack to figure out your password, or they could just be mean and use the System Rescue CD to change your Windows password.
Once that person has access to your files, they can recover your passwords with free tools easily—you can recover passwords in a few clicks from Outlook, Instant Messenger, Wi-Fi, Internet Explorer, Firefox, Chrome, or any number of other applications. All it takes is a quick Google search to find even more cracking utilities.
Link:
http://lifehacker.com/5445101/your-passwords-arent-as-secure-as-you-think-heres-how-to-fix-that?skyline=true&s=i