From the Facebook user agreement: "You will not share your password (or in the case of developers, your secret key), let anyone else access your account, or do anything else that might jeopardize the security of your account." Simply explain that giving the password is a violation of the contract and that you wouldn't want to hire people who don't follow the rules.

When did we start referring to the parking brake as an emergency brake?

if we all took the position that extraordinary claims require extraordinary evidence.