I assume that 'someone' is me?!

Ts should only ever 'use' information clients give them in session. Searching for additional info that a client may not want them to know or disclose is closer to snooping on a client - which is not ethical. Clients have the right to choose what they want to share with a T.

Prior to starting therapy, Ts get the client's info + emergency contact if needed. So there is is no need to go behind the client's back.