Netflix, Spotify, Twitter, PayPal, Slack. All down for millions of people. How a group of teen friends plunged into an underworld of cybercrime and broke the internet—then went to work for the FBI.

Stefan Thomas lost the password to an encrypted USB drive holding 7,002 bitcoins. One team of hackers believes they can unlock it—if they can get Thomas to let them.

Secret codes. Legal threats. Betrayal. How one couple built a device to fix McDonald’s notoriously broken soft-serve machines—and how the fast-food giant froze them out.

How digital detectives unraveled the mystery of Olympic Destroyer—and why the next big attack will be even harder to crack.

At 22, he single-handedly put a stop to the worst cyberattack the world had ever seen. Then he was arrested by the FBI. This is his untold story.

The notorious Alpha02 oversaw millions of dollars a day in online narcotic sales. For cybercrime detectives, he was public enemy number one—and a total mystery.

Kang Chol-hwan’s goal, as wildly optimistic as it may sound, is nothing less than the overthrow of the North Korean government.