Modern societies are highly vulnerable to severe digital disruption, but less vulnerable to complete and permanent collapse. The greatest danger is not one computer system failing; it is a chain reaction in which electricity, communications, finance, transport, healthcare, government, and public trust begin failing together. Cybersecurity and Digital Warfare: How Vulnerable Are Modern Societies to Digital Collapse? Modern societies are deeply vulnerable to digital disruption because essential services now depend on interconnected computer networks, software platforms, telecommunications systems, cloud infrastructure, satellites, industrial controllers, and electronic databases. Electricity grids use digital control systems. Banks depend on data centres and telecommunications. Hospitals rely on electronic records, diagnostic systems, networked equipment, pharmaceutical supply chains, and digital payment mechanisms. Transportation systems use software for signalling, navigation, sc...