How to be a spy in the digital age
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How to be a spy in the digital age

9 December 2018 Last updated at 10:51 GMT

The head of MI6 has just revealed a huge secret - his first ever mission

But more than 20 years on from that, the demands on agents have massively changed.

It's no longer just a matter of trench coats, cocktails and false identities. So what does it take to be a spy in the digital age?

Produced by Emily Wolstencroft.