Sandworm: A New Era of Cyberwar and the Hunt for the Kremlin's Most Dangerous Hackers: Andy Greenberg: 9780385544405: Amazon.com: Books "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, including the first-ever blackouts triggered by hackers."