Why everyone should be worried about cyberattacks
Agenda: WannaCry ransomware a landmark salvo in cybercrime war of attrition
The WannaCry hackers targeted the weakest links. In response Microsoft made the unusual move last weekend of releasing a patch for Windows XP and other unsupported systems. Photograph: iStock
The message on the screen began with the jaunty, almost innocuous line “ooops, your files have been encrypted!” as if the user had made a silly mistake.