Investigative journalist Andy Greenberg examines the activities of Sandworm, a Russian state-linked cyberwarfare group associated with major global cyberattacks. Combining cybersecurity reporting, geopolitical analysis, and digital forensics, the book traces the evolution of cyber conflict from covert intrusion to infrastructure disruption and information warfare. It explores the intersection of hacking, intelligence operations, and international security, highlighting the growing role of cyber capabilities in modern geopolitical competition