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The #1 Password Strength Tool. Trusted and used by millions.

Pwned Passwords are hundreds of millions of real world passwords previously exposed in data breaches. This exposure makes them unsuitable for ongoing use as they're at much greater risk of being used to take over other accounts.

This problem would not exist had someone not had the amazingly brilliant idea of stuffing HTML into email. The ASCII ribbon campaign was an Internet phenomenon started in 1998 advocating that email be sent only in plain text, because of the dangers of using HTML in email. Go figure, the Unix graybeards were right!