" North Korea gets a high score for both “defense” and “lack of dependence.” North Korea can sever its limited connection to cyberspace even more easily and effectively than China can. Moreover, North Korea has so few systems dependent upon cyberspace that a major cyber war attack on North Korea would cause almost no damage. Remember that cyber dependence is not about the percentage of homes with broadband or the per capita number of smart phones; it’s about the extent to which critical infrastructures (electric power, rails, pipelines, supply chains) are dependent upon networked systems and have no real backup. "

― Richard A. Clarke , Cyberwar: The Next Threat to National Security & What to Do About It