Betty, a cardholder, receives a call inquiring about her ssn. the caller introduces himself as an employee of the travel card vendor and tells her that he needs her ssn to verify the validity of the card. what should betty do?

In any situation where the caller is asking for personal information, a person should take necessary step to make sure the authenticity of the call. Betty's first line of defense against any fraud is to ask multiple questions without providing any information. She should then tell the caller that she will call the company herself and verify the information they need.