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Forum Discussion
pathfinder76
3 years agoSuper Contributor
5 characters- collision
i know 1password used haveibeenpwned.
according the website "When you search Pwned Passwords
The Pwned Passwords feature searches previous data breaches for the presence of a user-provided pass...
Former Member
3 years agopathfinder76 You didn't read the complete password checking description. The first 5 characters of the hash are sent to HIBP, then HIBP sends back every hash known from some breach that starts with these 5 characters. As far as I remember, it's about 5-30 hashes you're getting this way. This is then checked by some Javascript locally in your browser, and if one of these hashes match, it's reported. HIBP doesn't get notified which of the hashes actually matched or whether one matched at all.