- “A global domain within the information environment whose distinctive and unique character is framed by the use of electronics and the electromagnetic spectrum to create, store, modify, exchange, and exploit information via interdependent and interconnected networks using information-communication technologies.” [tooltip tip=”In Kramer, Franklin, S.H. Starr, and L.K. Wentz (eds.). (2009). Cyberpower and National Security. Washington, D.C.: National Defense University Press.”]Daniel Kuehl, From Cyberspace to Cyberpower: Defining the Problem (2009). [/tooltip]
- “The notional environment in which digitized information is communicated over computer networks.” U.S. Department of Defense (2006).
- “The ‘cyberspace dimension’ refers to the middle layer – the information infrastructure – of the three realms of the information warfare battle-space. These three realms are the physical (facilities, nodes), the information infrastructure, and the perceptual.” Edward Waltz, Information Warfare Principles and Operations (1998).
- “A domain characterized by the use of electronics and the electromagnetic spectrum to store, modify, and exchange information via networked systems and physical infrastructures.” National Military Strategy for Cyberspace Operations (2006).
- “A global domain within the information environment consisting of the interdependent network of information technology infrastructures, including the Internet, telecommunications networks, computer systems, and embedded processors and controllers.” Deputy Secretary of Defense Gordon England (2008).
- “A consensual hallucination.” William Gibson, Neuromancer (1984).