The history of Cyber-warfare can be traced back to the advent of the telegraph communications in the first half of the 19th century. During the First World War the importance of codes and wired communications came of age with such famed episodes as the intercepting by the British Intelligence of the Zimmerman Telegram dispatched by the Foreign Secretary of the German Empire, Arthur Zimmermann, to the German ambassador in Mexico, Heinrich von Eckardt. Dur: 19mins File: .mp3