As cyber-attacks dominate front-page news, as hackers displace terrorists on the list of global threats, and as top generals warn of a coming cyber war, few books are more timely and enlightening than Dark Territory: The Secret History of Cyber War, by Slate columnist and Pulitzer Prize-winning journalist Fred Kaplan. Kaplan probes the inner corridors of the National Security Agency, the beyond-top-secret cyber units in the Pentagon, the "information warfare" squads of the military services, and the national security debates in the White House, to tell this never-before-told story of the officers, policymakers, scientists, and spies who devised this new form of warfare and who have been planning and (more often than people know) fighting these wars for decades. From the 1991 Gulf War to conflicts in Haiti, Serbia, Syria, the former Soviet republics, Iraq, and Iran, where cyber warfare played a significant role, Dark Territory chronicles, in fascinating detail, a little-known past that shines an unsettling light on our future.