Earlier quoted context omitted.
I think the true error in process is that a SSN is considered to be a secret, unique ID, and many (many!) institutions allow you to use it as a proof of identity. It's short, guessable, would fail all of their own password requirements, and yet somehow it gets a free pass. I just consider my SSN to be public, and move about my digital life with that assumption. I don't go plastering it on walls, but if I encounter a…
Exactly. In the UK we have a National Insurance number, but it's stated over and over again that: This is not proof of identity . Anywhere it is referenced it is repeated that it should not be used as proof of identity and not given to anyone as such. SSNs should be treated the same way, but that would require a culture change. Perhaps having 150m of them 'leaked' will bring about that change. Such a change could als…
What is it then?
I've seen it used as a quasi-password by car hire companies to access driving license history.