Keith Nuthall
ASK the man propping up the bar in a smoky pub who is Britain's top expert on secret codes, and he would probably say James Bond. Which is probably why many companies are hiring experts from a government agency linked to its intelligence unit GCHQ for advice on computer cryptography and other IT security issues.

The Communications-Electronics Security Group offer three services tailored for private industry from its base in Cheltenham. It is the Government's National Technical Authority for the use of cryptography and information ...

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