Terrorism
Terrorist acts frequently have a political purpose. Some official, governmental definitions of terrorism use the criterion of the illegitimacy or unlawfulness of the act. to distinguish between actions authorized by a government (and thus "lawful") and those of other actors, including individuals and small groups. For example, carrying out a strategic bombing on an enemy city, which is designed to affect civilian support for a cause, would not be considered terrorism if it were authorized by a government. This criterion is inherently problematic and is not universally accepted, because: it denies the existence of state terrorism. An associated term is violent non-state actor.
Cyberterrorism
There is an old saying that death or loss of property are the side products of terrorism, the main purpose of such incidents is to "create terror" in peoples' minds and harm bystanders. If any incident in cyberspace can "create terror", it may be rightly called cyberterrorism. For those affected by such acts, the fears of cyberterrorism are quite real.