Cyberterrorism (also sometimes commonly spelled "Cyber-Terrorism), also known as "Technoterrorism" (also sometimes commonly spelled "Techono-Terrorism) or "Cracking", refers to acts of deliberate, large-scale disruption of computer networks, especially of personal computers attached to the Internet, by the means of tools such as computer viruses. It consists in relating to deployments, by known terrorist organizations, of disruption attacks against information systems for the primary purpose of creating alarm and panic. The intentional use of computer, networks, and public internet is realized to cause destruction and harm for personal political or ideological objectives.