Hello, I have a few questions regarding tax ID numbers......this is like your SS#, right? Meaning that it should be kept confidential? Can a tax ID # be used to get a credit card? If I have accidently given this info to the wrong person, should I be concerned about business identity theft or someone obtaining credit or a loan with my number? How can I block credit for this number so that no credit can be issued?Please answer soon, am I overly paranoid? I just don`t want to get financially.