Cybersecurity is the defining problem of the digital era. Data breaches, ransomware, IP theft and increasingly frequent dangerous attacks on networks are – as everyone knows – getting worse, not better. The risks to economic prosperity, social cohesion and national security have been mounting for years. We’re now at the point when the President of the United States had to put companies across the country on “high-risk” alert against a Russian cyber-attack – his most prominent warning yet.