McGraw says the kind of attacks that might come from North Korea, are the kinds of things that Google and Amazon probably wouldn't even notice, and if they did, they would have no trouble shutting them down."
He says while cyberwar should be taken seriously, some of the fears about it are the result of hype.
North Korea, he says, has much more serious internal problems to confront.
"Why are we wringing our hands over cyberwar?" he asks. "We ought to be wringing our hands over the fact that they can't even feed their own people."
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