The most colossally stupid and historically consequential mismanagement of classified war plans in an electronic transmission belongs to Arthur Zimmermann, the German foreign minister who dispatched ...

NEWPORT, R.I. — In a secret telegram a century ago, Germany tried to get Mexico to join its side during World War I by offering it territory in the United States. Britain intercepted, deciphered and ...

British Foreign Affairs Office, London, February, 23rd 1917. In the afternoon, Arthur Balfour, the foreign secretary of the United Kingdom, hands the American Ambassador Walter Page a sheet of paper.

Host Simon Singh examines the secretive history behind the development and evolution of ciphers and code breaking. Thestories in the series range from the cipher that sealed the fate of Mary, Queen of ...