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The stated purpose of the puzzles each year was to recruit "highly intelligent individuals", although the ultimate purpose remains unknown. [2] Theories have included claims that Cicada 3301 is a secret society with the goal of improving cryptography, privacy, and anonymity or that it is a cult or religion.
Jeffreys's perforated sheets were used by Polish cryptologists in exile in France to make the first wartime decryption of an Enigma message on 17 January 1940. [ 8 ] In early 1940, a section called " Hut 6 " — named after the building in which it was initially housed — was created to work on solving German Army and Air Force Enigma messages.
"Kryptos: The Unsolved Enigma". In Daniel Burstein; Arne de Keijzer (eds.). Secrets of the Lost Symbol: The Unauthorized Guide to the Mysteries Behind The Da Vinci Code Sequel. HarperCollins. pp. 319–326. ISBN 978-0-06-196495-4. Dunin, Elonka (2009). "Art, Encryption, and the Preservation of Secrets: An interview with Jim Sanborn". In Daniel ...
At present, there is no explanation widely accepted by economists. [ 8 ] [ 9 ] [ 10 ] The Modigliani–Miller theorem suggests that the puzzle can (only) be explained by some combination of taxes, bankruptcy costs, market inefficiency (including that due to investor psychology ), and asymmetric information .
The emblem and painted enigma were similar in that each usually contained some clue that the composition contained a hidden meaning, usually a "written legend which might be a verbal riddle or rebus to be solved by the same word, or a simple epigrammatic motto such as constituted the 'soul' of the emblem."
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In 2007 a three-sided memorial was unveiled before the Imperial Castle in Poznań, commemorating the three mathematician-cryptologists (Rejewski, Różycki and Zygalski), alumni of the University of Poznań, who reconstructed the German Enigma machine and developed methods of breaking Enigma ciphers, thus contributing to subsequent Allied ...
Later, the 1973 public disclosure of Enigma decryption in the book Enigma by French intelligence officer Gustave Bertrand generated pressure to discuss the rest of the Enigma–Ultra story. [ 101 ] The British ban was finally lifted in 1974, the year that a key participant on the distribution side of the Ultra project, F. W. Winterbotham ...