I think electrical is all you'd really need to take out. If it were an attack like stuxnet, where it physically destroys the power generators, we will be in for

I think electrical is all you'd really need to take out. If it were an attack like stuxnet, where it physically destroys the power generators, we will be in for a very long ride without electricity. Potentially years. The generators can get so hot they just melt/fuse internally, permanently destroying it. And, it can take many months to years to get a replacement. They're not just sitting on a shelf somewhere, and if dozens or hundreds are needed simultaneously... Seeing as how everything is centered around electricity, including water pumps, internet, financial systems, gas pumps (knocking out the whole supply system), etc., it would be game over and we'd be in a Lord of the Flies situation. Think about shutting off the failsafes on a nuclear power plant and ramping it up to run outside of normal parameters causing a meltdown. PBS - NOVA (CyberWar Threat): https://www.youtube.com/watch?v=0EnTLju9_cE https://www.youtube.com/watch?v=0EnTLju9_cE Watch the whole thing, but check around the 37min mark for demos with generators. PBS - NOVA (Rise of the hacker: https://www.youtube.com/watch?v=-ZdasoAGMQs https://www.youtube.com/watch?v=-ZdasoAGMQs This gives a very good description of stuxnet, which is released out in the wild now for anyone to use. THAT, is downright scary.