"our power grids, air and ground transportation, telecommunications, and water-filtration systems are in jeopardy." Simple solution to all but one of those: u

"our power grids, air and ground transportation, telecommunications, and water-filtration systems are in jeopardy." Simple solution to all but one of those: unplug the uplink cable. There's no reason that systems with control over power grids or water filtration systems should be connecting to any public network.