The Guardian has found that the UK’s most hazardous nuclear site, Sellafield, has been hacked into by cyber groups closely linked to Russia and China, as well as uncovering other safety concerns. Reporters Anna Isaac and Alex Lawson tell Michael Safi about the Guardian’s investigation. A Sellafield spokesperson said: “We take cybersecurity extremely seriously at Sellafield. All of our systems and servers have multiple layers of protection. Critical networks that enable us to operate safely are isolated from our general IT network, meaning an attack on our IT system would not penetrate these. “Over the past 10 years, we have...