Robert Graham of Errata Security explains how the notion of cyberwarfare misses reality by an inch or two:

»I’m reading various articles about the Russia’s proposal, with support from the UN, for a „cyberwarfare arms limitation treaty“. What astounds me is that nobody seems to realize that „cyberwarfare“ is a fictional story, and that „arms“ in cyberspace don’t exist. (…)«

(Errata Security: Cyberwar is fiction)

There isn’t much to comment on his text. I think he got it right.