Andy Greenberg is an award-winning senior writer for Wired magazine, where he covers security, privacy, information freedom, and hacker culture. He is the author of the 2012 book This Machine Kills Secrets, and his stories for Wired on Ukraine’s cyberwar (including an excerpt from Sandworm) have won a Gerald Loeb Award for International Reporting and two Deadline Club Awards from the New York Society of Professional Journalists. He is the author of Sandworm: A New Era of Cyberwar and the Hunt for the Kremlin’s Most Dangerous Hackers (Doubleday), the true story of the desperate hunt to identify and track an elite team of Russian agents bent on digital sabotage. In 2014, the world witnessed the start of a mysterious series of cyberattacks. Targeting American utility companies, NATO, and electric grids in Eastern Europe, the strikes grew ever more brazen. The hackers behind these attacks are quickly gaining a reputation as the most dangerous team of cyberwarriors in history: a group known as Sandworm. A chilling, globe-spanning detective story, Sandworm considers the danger this force poses to our national security and stability. As the Kremlin’s role in foreign government manipulation comes into greater focus, Sandworm exposes the realities not just of Russia’s global digital offensive, but of an era where warfare ceases to be waged on the battlefield. It reveals how the line between digital and physical conflict, between wartime and peacetime, have begun to blur–with world-shaking implications.