One may give the following possible scenarios in an attempt to better define and explain cyber terrorism:

• Blocking emergency communications or cutting off electricity or water in the wake of a conventional bombing or a biological, chemical, or radiation attack,

• Destroying the actual machinery of the information infrastructure,

• Disrupting the information technology underlying the internet, government computer networks, or critical civilian systems such as financial networks or mass media,

• Using computer networks to take over machines that control traffic lights, power plants, or dams in order to cause collateral damage,

• Stealing classified information, altering the content of web pages, disseminating false information, sabotaging operations, erasing data etc. in cyber milieu,

• Disrupting financial markets or media broadcasts, an attack could undermine confidence or cause panic such as breaching dams, colliding airplanes, shutting down the power grid etc., via remote control systems.

Therefore, the correct option is D.