While warnings pervade government and the media, doomsday scenarios of cyberterrorism that result in massive deaths or injury remain largely the stuff of Hollywood scripts or conspiracy theory. Although it is possible for electronic intrusions to damage infrastructure and threaten physical danger, taking control of those systems from the outside is extremely difficult, requires a great deal of specialized knowledge and must overcome non-computerized fail-safe measures. As a result, government and corporate security experts--while careful not to dismiss the gravity of the issue--point to this indisputable fact: It is still easier to bomb a target than to hack a computer.