Enigma: the development and use of a new technology
Early triumph: German intelligence successes
Of no mutual assistance: compartmentalization and competition in German signals intelligence
The work of Station X: centralizing Allied cryptology at Bletchley Park
Protecting Boniface: Allied security, disguise and dissemination of Ultra
The illusion of security: the German explanations for Allied successes
A long-standing anxiety: Allied communications security
Determined answers: structural problems in German signal intelligence
Enter the machines: the role of science and machines in the cryptologic war
Conclusion: recognizing the end of security.
