I say

Cyberspace is defined as "an electronic medium through which information is created, transmitted, received, stored, processed and deleted" .  (referenced) So there you go

U.S., Russia slowly improve cybersecurity cooperation The report in this article defines cyberspace as "an electronic medium through which information is created, transmitted, received, stored, processed and deleted". I suppose that's as good a definition as we can get, if we are not to worry about the etymology as being skilled in governing! I think that the Chinese do more than just "harbour" hackers, don't they? InfosecChap 
  Vision 2011: Symantec set for £1bn splurge on cloud and mobile buys In the good old days they were merely AV touts. Now, they are burning their way across the infosec landscape. I'm sure that they have done the analysis, but securing "the cloud" (whatever that means) is more than just slapping a DLP box on the perimeter. I'd like to see their detailed strategy. @InfosecChap