Answer:
Cyberterrorism
Explanation:
Cyberterrorism is unlawful use and exploitation of computers and networks (internet) by an individual or a group.
This is done to carry out illegal activities that can cause serious harm to people, government or causing large scale damage to computer systems.
The motivation behind cyberterrorism is usually to achieve some political or ideological or personal objectives, to cause disruption and coercion in a community, to damage the security systems or other government programs thus causing "terror".
Cyberterrorism is done using internet to cause damage to other computer systems by means of malicious software in order to create disruption, terror or stealing the sensitive information.
For example the cyber terrorists can steal confidential information of military department by attacking the security systems for some political gain just as the hackers stole secret defense plans of US and South Korea which was an act of cyberterrorism.