Alright, I sound like a such a noob for asking this but what do people mean that an account has more owners? Here's an example...
PSN: Billy
4 other owners.
Secure.
Like do 4 other people own the same account? If so, how is it secure if those other people have access to it? And same thing with consoles. Do other people have the account in their Xbox when they list how many consoles that account's in? Thanks whoever can explain this.