Today, thanks to extraordinary sleuthing by the F.B.I. and some of the world’s premier cybersecurity experts, there are answers to these questions. They offer an unsettling reminder of the remarkable sophistication of a growing network of cybercriminals and nation states — and the vulnerability of not just our computers, but the internet itself.

It infected 10 million computers. So why did cybergeddon never arrive?

Credit Credit Cathryn Virginia