Cryptanalysis of the Enigma immense problem and it gave a great deal of trouble. Work on a high speed machine had been started by Wynn-Williams of the TRE late in 1941 and some nine months later Harold Keen of BTM started work independently. Early in 1942, Bletchley Park were a long way from possessing a high speed machine of any sort. Eventually, after a long period of being unable to decipher U-boat messages, a source of cribs was found. This was the Kurzsignale (short signals), a code which the German navy used to minimize the duration of transmissions, thereby reducing the risk of being
The Bourne Enigma Karpov's riddle—and hunt down Borz—if he hopes to prevent a cataclysmic international war... The Real Book Spy commented, "Van Lustbader knows just how to keep fans on the edges of their seats as he lays out the story’s plot, sucking them in and setting up for a climactic ending that doesn’t disappoint." Ray Palen of The Book Reporter stated that, "The Bourne Enigma is a rollicking roller coaster ride of spy games and colorful characters set against the expected multiple international locales...This is an enjoyable and fast-paced read that faithfully continues the enigma that is Jason Bourne." The Bourne Enigma