Enhancing Pwned Passwords Privacy by Exclusively Supporting Anonymity
When I launched Pwned Passwords in August [https://www.troyhunt.com/introducing-306-million-freely-downloadable-pwned-passwords/], I honestly didn't know how much it would be used. I made 320M SHA-1 password hashes downloadable and also stood up an API to query the data "as a service" by either a plain text password or a SHA-1 hash. (Incidentally, for anyone about to lose their mind over SHA-1, read that launch post as to why that hashing algorithm is used.) But the service did become quite popu...