Davis argues persuasively that cyber technology—like the Cold War development of increasingly destructive nuclear weapons—requires of nations a complex rethinking of the nature of modern warfare.... Davis does an excellent job of explaining such concepts as hacktivism, cyberespionage, weaponized cyberattacks, cyberterrorism, and online disinformation campaigns by presenting numerous illustrative examples. She also points out that entirely laudable policies, such as tracking COVID exposure through facial recognition, social network analysis, cell phone monitoring, and other invasive technologies may lead to increased governmental privacy violations in the future. Davis's most creative argument is that the longstanding differences between the Western nations, Russia, and China in their philosophical attitudes to warfare now are impacting the various ways in which these countries approach cyber conflicts. Recommended.