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Its quite truthworthy. Its run by Troy Hunt (known security researcher) and : "When you search Pwned Passwords The Pwned Passwords feature searches previous data breaches for the presence of a user-provided password. The password is hashed client-side with the SHA-1 algorithm then only the first 5 characters of the hash are sent to HIBP per the Cloudflare k-anonymity implementation. HIBP never receives the original password nor enough information to discover what the original password was." from https://haveibeenpwned.com/Privacy





My only concern with the site is some privacy implications. I entered a friend's email just to check for him and it wasn't validated at all, and I found out a few sites he had accounts with. Nothing too concerning was revealed, but privacy for its own sake is a valid goal IMO.

As far as I know hibp specifically hides sensitive breaches (such as the Ashley Madison one) to non-verified access. Also, he basically only shows public data; your privacy was already gone back when the original company failed to secure their servers.

Understood, it's a small complaint, the data is already out there on the web and it's not his fault. But there is value in aggregation or the site wouldn't exist. It makes it easier to just put a few emails in there and see what shows up for fun or malice.

It's great that sensitive breaches are apparently hidden but I'd be wary of judging for other people what is sensitive. Some like Ashley Madison are obvious, others less so.


Are you gonna fire Troy?

Yes, of course.

Actually, I don't understand your comment.


I'm just alluding to the people that got fired and expelled for involving themselves with "passwords" in the comments above.



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