New technologies are changing how we protect our citizens and wage our wars. Among militaries, everything taken for granted about the ability to maneuver and fight is now undermined by vulnerability to “weapons of mass disruption”: cutting-edge computer worms, viruses, and invasive robot networks. At home, billions of household appliances and other “smart” items that form the Internet of Things risk being taken over, then added to the ranks of massive, malicious “zombie” armies. The age of...
