In cyberattacks, hacking humans is highly effective way to access systems

Government and business leaders in the United States and around the world are rushing to build better defenses -- and to prepare for the coming battles in the digital universe. To succeed, they must understand one of the most complex, man-made environments on Earth: cyberspace. (Whitney Shefte, Sohail Al-Jamea and Robert O'Harrow Jr./The Washington Post)