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Organisations are being strongly advised not to pay any ransoms in response to the ransomware attack. Ciaran Martin, Chief Executive of the National Cyber Security Centre which is part of GCHQ, says that globally, there is a market in targeting many, often private sector companies. Mr Martin told the World At One that the Department of Health and the NHS are very clear that affected bodies in the UK will not pay. (Image: computer screen locked by hacking; Credit Getty Images)