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Hello and welcome to Babbage on Economist Radio.

I'm Kenneth Kukie, a senior editor at the Economist

and coming up later in the show.

I will be discussing cybersecurity with Michael Chertoff,

the former US Secretary of Homeland Security.

In China, they are now working on a proposal

for your social credit score,

including who your friends are and what they do.

And they will decide if you're a good citizen or a bad citizen.

...