Terrorism poses an undeniable threat, but is the same true of “cyberterrorism”? Can terrorists and malicious hackers remotely commandeer or disrupt critical networks and infrastructure like electrical grids, key financial networks, and water supply systems, or are those threats overblown? If such theats are plausible, might they be carried out instead of, or as part of, a physical attack? What are the relative risks of physical threats and cyberthreats, and how much attention does cybersecurity deserve in the broader expanses of national, corporate, and personal security? Does government have a role, or should the private sector handle cybersecurity through better management and innovations such as insurance and security outsourcing? Join author Dan Verton and commenter George Smith for an engaging discussion of threats to digital—and physical—security.