She said: “I’ve spent three decades working in national security, and the risk of miscalculation is as high as I’ve ever seen it.” Britain’s National Cyber Security Centre has warned that ransomware could become one of the most serious security threats the country faces in the near future. Recent Iranian cyber attacks on local American water companies hints at what the future could hold. Digital resilience must therefore be seen as a matter of national security rather than a technical concern. As the economy, public services and family life become ever more dependent on digital networks, every Briton has a stake in keeping them secure.