Since 1941, when the Colossus Mark 1 was turned on at Bletchley Park (UK) as part of the British code breaking efforts, technology has been on steady journey to become more distributed – and the challenge of keeping these systems secure has grown exponentially as they become more distributed. In 1946, those worried about the security of the Colossus (and Bombe – Turing’s machine that helped crack the German Enigma Code) had a small number “threat vectors” to be concerned with