David Kahn is universally regarded as the dean of intelligence historians. He is the author of Seizing the Enigma: The Race to Break the German U-Boats Codes, 1939-1943. His pathbreaking book The Codebreakers, the classic history of codemaking and codebreaking remains in stalwart print 45 years after its publication (portions have been updated). He is also the co-founder of the Taylor & Francis journal, Cryptologia, which continues to attract new subscribers.