[acchow]

Not only an identifier, many places use it as a secret.

[chii]

Plenty of places also use mother's maiden name as a password/secret too.

[beretguy]

DBA at my previous job wanted to use SSN as a primary key. I felt like I’m talking to a child trying to convince him not to do that.

[cbsmith]

Which is dumb.

[Aeolun]

One could argue criminal.

Feel like it’s kinda like my bank using my email as the password or something.

[cbsmith]

You're not wrong.