Ever wonder how companies all seem to know the "last four of your social" or Date of birth. Credit card numbers? It's because we give it to them. Should you? I don't believe so but it has become commonplace and a big problem.Hundreds of millions of records are stolen every year. All of the above can lead to serious consequences for you.Social Security numbers were never inteded to be used as a personal identifier for everything. The trend is slowing HIPPA rules and Helath Insurance carriers are giving us I.D's rather than SSN- (but still asking for SSN I Don't know why)Protect yourself. Don't be so quick to spew out your birthdate or Social number. Only in rare instances does some 3rd party really need it.