Lifehacker provides a little insight into the thought processes a professional password guesser uses to guess your password. Security expert Roger Grimes writes at InfoWorld how easily passwords can be guessed and says that these days passwords need to be longer than the mere six-to-eight characters typically used.
Consider lengthening your password and including special characters in it. The longer and more random your password is, the harder it is to guess. Lifehacker also provides a list of the most commonly used passwords. Make sure your passwords are not on this list. Also check out the password tips at the bottom this article.