No, I don't think they are. However I do think, and have for some time, that our enemies, be it Russia, Iran or China can do significant damage with a major cyber attack. How long would it take for meltdown if there was no internet, card payments, ATM access, sat nav, mobile phones, maybe electricity, traffic lights out of action etc? I'd give it 48 hours before there was major civil unrest. We've got a a couple of £000 in cash easily accessible should the above come to fruition and have had for some time. Lucky to be able to do it I know but I do think it's the way a country can be devastated from within.