The Fifth Domain

"A sobering but hopeful exploration of defenses against the weaponization of the internet . . . Clarke and Knake, drawing on interviews with experts, explain cybersecurity's intricacies in a lucid, engaging manner that avoids the alarmism that often surrounds the subject. The result is a fine survey that will interest policy makers, executives, and ordinary readers alike."-Publishers Weekly "Clarke and Knake, both of whom logged time inside the cybersecurity arms of presidential administrations, have much to say about the ways in which governments and companies have tried to make themselves safe from the legions of hackers out there, from your ordinary black hats to agents of Russia, China, Iran, North Korea, and other entities. . . . The authors counsel reassuringly [that] as companies finally make the transition to more secure systems of transmission, encryption, and data storage, there is hope that the threats of old will one day be a footnote. . . . Largely of interest to policymakers and security experts, though with much for the Wired crowd as well." -Kirkus Reviews "In the battle raging between offense and defense in cyberspace, Clarke and Knake have some important ideas about how we can avoid cyberwar for our country, prevent cybercrime against our companies, and in doing so, reduce resentment, division, and instability at home and abroad."-Bill Clinton "Cyberspace is the battlefield of the future. Our national security is dependent on whether we wake up and recognize the nature of this threat. In The Fifth Domain, Richard Clarke and Robert Knake are issuing a strong wake-up call. As they conclude, 'what is missing is national consensus, will, and priority setting.' If we fail to take the necessary steps to defend ourselves, we may lose not just the battle but the war." -Leon Panetta "In The Fifth Domain, two of America's top cybersecurity experts reach a surprising and encouraging conclusion: it is within our power to manage cyber threats. Clarke and Knake offer a wealth of practical and achievable ideas for how the U.S. government, American companies, and private citizens can deter and thwart attacks."-Susan Rice

Richard A. Clarke is one of the world's leading experts on security, cyberspace, and terrorism. He served in the U.S. government for thirty years, including as White House counterterrorism coordinator under Presidents Bill Clinton and George W. Bush, and became the first White House official placed in charge of U.S. cybersecurity policy. He is the author of eight books (four works of nonfiction and four novels), including the number-one national bestseller Against All Enemies: Inside America's War on Terror. Robert K. Knake is a senior fellow at the Council on Foreign Relations, a senior research scientist at Northeastern University, and an adviser to startups, investment firms, and Fortune 500 companies. Knake served from 2011-15 in the Obama White House as director for cybersecurity policy at the National Security Council. He is the co-author (with Clarke) of the New York Times bestseller Cyber War.