critical US infrastructure is impregnable. The US outspends the rest of the world 10:1 on "defense"
China is hacking US companies all the time, no doubt. Russia as well, but they're not as interested a the big C. Iran is mostly going after US infra.
The point is, if a "cyber attack" occurs, it is because it was allowed, or the affected infrastructure is non-critical.
See: Cohencidental "cyber attack" which "shut down" US fuel pipeline.
critical US infrastructure is impregnable
NOTHING IS! You missed the point. If it's internet connected it can be breached, there is no perfect security. No amount of money can negate this simple fact.
Critical US infrastructure is not connected to external public networks
I agree nothing is perfect, (I should've said "virtually impregnable"). Short of all-out warfare, critical US infra is more than protected. ie. A nation-state like China would have to say "fuck it" and go balls deep into WWiII in order to cripple US infrastructure.
Critical US infrastructure is not connected to external public networks
Oh you sweet summer child, you don't need to attack that directly. Billing systems are certainly internet connected, and that is what got breached in this case. You think a for profit company is going to send out gas and NOT bill for it?
You don't need internet connectivity when you have a working internal login, and can get into a related office somewhere, or can get your way into that network via a social engineering attack. All it takes is time.
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