Cipher Brief experts take a new look at an unseen ‘war’ being waged – after two months of the Trump administration.

Here's your chance to crack ciphers similar to those Bletchley Park's codebreakers faced during World War II. Below, we present three ciphers of different levels of difficulty, from easiest to ...

Bernard: The cipher vehicle was like a mobile classroom ... and we were the first peopleto know two days before that the war was going to finish in two days time. The message tells you nobody ...

made it an immediate success as a field cipher, used by the British in the Boer War and the First World War, and by several armed forces as an emergency back-up cipher in the Second World War.

Foreign aid has been dismissed as soft-hearted waste, but it has always been used to build American influence and security.

Code- and cipher-breaking have been in operation for centuries. However, cryptanalysis – the art of deciphering encoded messages – took on a new importance during WW2 as British boffins ...