Based on all this information, the Password Analyzer calculates your Total Strength Score – a visual representation of the overall resilience of your passwords not just against brute-force attempts, but against other attacks as well. In addition to using a complex algorithm (based on Dropbox's zxcvbn) to check the strength of a password, it monitors its age, compares it to the rest of your login data to ensure that you haven't reused it, and warns you if it might have been compromised. To help you take all these things into consideration, we included a special Password Analyzer in our Cyclonis Password Manager. We have to bear in mind other things like whether the password is used on another website, for example, and whether or not it might have been stolen during a data breach of an online service. Open any password dictionary, however, and you'll find very near the top, and if you go to Troy Hunt's HaveIBeenPwned service, you'll see that it's been compromised at least 1,022 times.Įntropy, on its own, should never be relied upon to tell us whether or not we should use a particular password. Use the formula, and you'll end up with the same result – 72.6 bits. We still have a password that is eleven-characters long, it still has a capital letter, a symbol, and some numbers. As far as entropy is concerned, however, they're identical. In much the same way, most people would agree that is a horrific password. Most people would agree that ")g^pu>z元/9" is a reasonably strong password. A high entropy doesn't (and will never) mean an invincible password, though. You still have the same variety of possible characters, but the password is now 11 characters long which means that the entropy sits at 72.6 bits – a massive improvement.Įntropy is a good way of judging how difficult it would be to brute-force a password. If you take "pu>z元", add a few symbols at the beginning and put a couple more at the back, you'll end up with something like ")g^pu>z元/9".
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