Use a Password Checker to Test your Password's Strength

A basic doctrine of information security is to use a strong password. Your password should be at least 8 characters in length and contain a mix of letters, numbers and other special characters. See Password Best Practices from PSU ITS.

One way to determine if your password is strong is to type it into a password checker.

Microsoft’s online Password Checker reviews your password for sufficient length and complexity. As you enter your password the strength bar will move from Weak to Medium to Strong to Best.

http://www.microsoft.com/protect/yourself/password/checker.mspx