That’s correct. “Cyber” is not a problem that affects our sovereignty or the integrity of our national boundaries. Thus, it’s not a problem for the defense or intelligence establishments to handle.
The benefits of the online world vastly outstrip the risks - sorry Senator Rockefeller. With those benefits come a variety of problems akin to graffiti, house fires, street closures, petit theft, and organized crime. Those are not best handled by centralized bureaucracies, but by the decentralized systems we use to secure the real world: property rights, contract and tort liability, private enterprise, and innovation.
I've blogged about this before, here and here, but it's worth keeping tabs on.