XoN stores only the email and the name of the website it got breached. In other words, plain text passwords and other sensitive data are not stored for obvious reasons as the storage of that would bring in more issues than benefit to the public.
XoN also has the feature of checking breached passwords collection. This service makes use of SHA3-keccack 512 hashing algorithm for converting the collected passwords into one way hashes in storage.
With the current technologies available, it is highly unlikely someone can re-verse this SHA-3 Keccak hashes easily. This ensures the highest level of safety for stored hashes.
Please check the sample login page,
making use of this XoN Passwords. This can help a lot of users, preventing them from reusing old and exposed passwords.