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Cyber security high on Davos radar

Cyber security is one of the biggest challenges facing chief executives and political leaders around the world.

Many of them are gathered in Davos right now for this year's World Economic Forum, where the issue is high on the agenda.

There's also a warning that a failure to adequately protect against cyber attacks, could cost the global economy dearly.

The BBC's Michelle Fleury reports from Davos.

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