[osaariki]

Edge's Password Monitor feature uses homomorphic encryption to match passwords against a database of leaks without revealing anything about those passwords: https://www.microsoft.com/en-us/research/blog/password-monit... So not the first, but definitely cool to see more adoption!

[cedws]

This is nicer than the k-anonymity algorithm that Have I Been Pwned uses, but probably an order of magnitude more expensive to run.

[dagmx]

I believe Safari does the same as well, so not even technically the first at Apple if I’m correct?

[Groxx]

After reading the technical details... I'm really not sure tbh: https://support.apple.com/guide/security/password-monitoring...

I'm sure someone here understands that and can answer conclusively, but that's not me today.