This sounds a bit fishy but we haven't had a DB Cooper story for a while. According to his niece he used his real last name, was a logger from Sisters and still the feds never found him. They have fingerprints and DNA from a tie that he left on the plane so we should know, but the feds say that they are closing the case before the results come in? Yes she's writing a book. DB Cooper case 'solved': FBI tells niece of skyjacking suspect after 'matching' fingerprint | Mail Online D.B. Cooper Exclusive: Did Niece Provide Key Evidence? - ABC News So if this is true and you are hiding from the feds just use your real name for an alias and don't worry about it, you're good.