Definition of "cyberwarfare"

The geth models collectively dubbed "hoppers" by Alliance forces are electronic warfare platforms. They can project electromagnetic radiation across a broad spectrum as an offensive weapon. They can also perform cyber warfare attacks against the onboard computers of body armor hardsuits and weapons, adversely affecting their performance.

2008, BioWare, Mass Effect, Redwood City: Electronic Arts, PC, scene: Geth: Hoppers Codex entry

Many [computer attacks of Chinese origin] are believed to be linked to cyberwarfare units of the People's Liberation Army acting on behalf of state-owned, or state-affiliated, Chinese companies.

2014 April 6, David E. Sanger, “U.S. tries candor to assure China on cyberattacks”, in The New York Times‎