Very often, you are forced to use special characters, numbers, and uppercase and lowercase letters in a password. How Are Passwords Cracked?

Burr recommended creating passwords that were essentially weird nonsense words, chock-full of special characters and occasional capital letters and numbers.

And special characters? Frequently exclamation marks. CMU's password meter will offer advice for strengthening a password like "ILoveYou2!" -- which meets the standard requirements.