[tombrandis]

kind of but others are hard as well... most people don't change their name, date of birth or even email address when they are leaked.

[anonym29]

These aren't really "credentials" in that they're not secret the way your iris/retina pattern, fingerprint pattern, password, pin, secret key, or security token are.

Your name, DoB, and email address are identifiers, yes, but aren't really authenticators - they're more like a username, not a password.