Here is a list of the 500 worst (most frequently chosen) passwords:

From the moment people started using passwords, it didn’t take long to realize how many people picked the very same passwords over and over. Even the way people misspell words is consistent. In fact, people are so predictable that most hackers make use of lists of common passwords just like these. To give you some insight into how predictable humans are, the following is a list of the 500 most common passwords. If you see your password on this list, please change it immediately. Keep in mind that every password listed here has been used by at least hundreds if not thousands of other people.

There are some interesting passwords on this list that show how people try to be clever, but even human cleverness is predictable.

Dating myself a bit, I’ll admit that my favorite is “8675309.” Also, I was surprised that “123456″ edged out “password” for the #1 spot and that we didn’t see any outright profanity until #9.

No explanation on the source of the data or the frequency counts, so pretty limited usefulness, but it’s still interesting. I’d love to see the dropoff from a frequency graph of this. It’s taken from the book “Perfect Passwords: Selection, Protection, Authentication, and the blurb on Amazon says they authors analyzed over two million passwords to get their list.

(h/t BoingBoing)