Password Strength

Password Strength

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Let's start this post with a [real] joke:


WINDOWS: Please enter your new password.

USER: cabbage

WINDOWS: Sorry, the password must be more than 8 characters.

USER: boiled cabbage

WINDOWS: Sorry, the password must contain 1 numerical character.

USER: 1 boiled cabbage

WINDOWS: Sorry, the password cannot have blank spaces.

USER: 50bloodyboiledcabbages

WINDOWS: Sorry, the password must contain at least one uppercase character.

USER: 50BLOODYboiledcabbages

WINDOWS: Sorry, the password cannot use more than one uppercase character consecutively.

USER: 50BloodyBoiledCabbagesYouStupidIdiotGiveMeAccessNow!

WINDOWS: Sorry, the password cannot contain punctuation.

USER : IWillHuntYouDown50BloodyBoiledCabbagesYouStupidIdiotGiveMeAccessNow

WINDOWS: Sorry, that password is ...

Password Strength

Password strength is a metric (or measure) for the effectiveness of a password in resisting guessing and brute-force attacks. In its known form, it estimates how many trials attackers may need to reach to the password. The strength of a password is a function of size, complexity, and unpredictability.