Meet Leo Marks, WW2 cryptographer, who was given a 20 minute training exercise on his first day at work which took him the whole day to complete. He had accidentally not been given the cipher key and ended up breaking a code that was meant to be secure.
Leo Marks Leo Marks, who was codes and ciphers chief at the Special Operations Executive (SOE) during the second world war, and worked closely with agents dropped behind enemy lines, has died aged 80. He also pursued a long and sometimes controversial postwar career as a writer for stage and screen, culminating in the film […]