Noun
(countable, uncountable) Power exerted in or through the Internet or cyberspace.
(countable) An entity possessing such power.
Source: en.wiktionary.orgSee in particular the following links: "Cyberpower and National Security: Policy Recommendations for a Strategic Framework," in Cyberpower and National Security, FD Kramer, S. Starr, L.K. Wentz (ed. Source: Internet