StarDreamer
This may be straying off-topic, but related, is that some organisations purport that "security" is satisfied if the caller correectly states the name, address and date of birth of the person he or she is claiming to be.
Also, the utter silliness of some organisations trying to use Mother's Maiden Name as a security check.
I was asked my mother's maiden name as a security check on the phone, and when I told him and spelt it out, they replied 'No, it isn't'!
I assured him this was my mother's name, and that whoever had put it into the computer had made a typo. I then asked if the name in front of them was one character different, or had 2 letters reversed. I got through security eventually.