Originally Posted by
Often1
With the information requested, one could simply cancel the tickets. While that won't do the bad guy any good, there are all kinds of bad people out there.
With the information requested, could one cancel the ticket, pay the $300 or whatever it is change fee, and use the residual value to buy a new ticket (and then sell it to someone else for $500 so that person gets stuck with a ticket that AA would probably cancel when the OP calls in)? That's my best guess for what a fraudster would be trying to do here.