Delusions of Intelligence by R. A. Ratcliff
Enigma, Ultra, and the End of Secure Ciphers

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In 1974, the British government admitted that its WWII secret intelligence organization had read Germany's ciphers on a massive scale. The intelligence from these decrypts influenced the Atlantic, the Eastern Front and Normandy. Why did the Germans never realize the Allies had so thoroughly penetrated their communications? As German intelligence experts conducted numerous internal investigations that all certified their ciphers' security, the Allies continued to break more ciphers and plugged their own communication leaks. How were the Allies able to so thoroughly exploit Germany's secret messages? How did they keep their tremendous success a secret? What flaws in Germany's organization allowed this counterintelligence failure and how can today's organizations learn to avoid similar disasters? This book, the first comparative study of WWII SIGINT (Signals Intelligence), analyzes the characteristics that allowed the Allies SIGINT success and that fostered the German blindness to Enigma's compromise.

About R. A. Ratcliff

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R. A. Ratcliff, who currently lives and consults in the hills above Silicon Valley, has taught history and rhetoric at the University of California at Berkeley and the University of San Francisco and has lectured at the National Security Agency's intelligence school. In addition to working in the high tech industry, Dr Ratcliff has written articles for Cryptologia, Intelligence and National Security, and the NSA's internal newsletter.
Published August 14, 2006 by Cambridge University Press. 334 pages
Genres: History, Travel, War, Computers & Technology. Non-fiction

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Publishers Weekly

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Ratcliff, a freelance scholar and consultant, offers a provocative analysis of WWII signals intelligence from a German perspective.

Jun 12 2006 | Read Full Review of Delusions of Intelligence: En...

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