On 31 August, Jaguar Land Rover (JLR) noticed an attack on its computer systems. JLR – which employs 32,800 people and supports another 104,000 jobs through its supply chain, mostly in the West Midlands – had to close its factories for over a month. It is estimated that the attack will cost some £1.9 billion. JLR is only the latest victim in a string of ransomware attacks. In the UK alone, Marks & Spencer, the Co-op Group, Harrods, Heathrow Airport, Transport for London and the British Library have all had their operations disrupted in the past two years.

According to GCHQ’s National Cyber Security Centre, “highly significant” attacks rose by 50% in the past year, with 18 incidents affecting the Government, essential services, the economy or a large number of people.

Why is this happ

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