: defending our country, our companies, and ourselves in the age of cyber threats Clarke, Richard A Robert K. Knake creator text New York Penguin Press 2020 monographic 344 p. : ill. ; 22 cm. Includes index. Computer networks Computer security Corporations security measures National security Information technology Security measures Cyberwarfare Cybersecurity FC GGC 363.325 CLA 9780525561989 (pbk) 20260710113617.0