How Alan Turing and His Fellow Codebreakers Broke the Nazis’ “Unbreakable” Enigma Code

There was a time when you could just go out and buy an Enigma machine. In the early nineteen-twenties, any organization with a need to keep its communications secret could order a few of those brand-new devices from Germany and rest assured that any messages encoded using them would be safe from prying eyes. It […]

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