These are localized problems, not common-mode failures. I'm talking about a problem with something that takes out a significant portion of the internet. This isn't about a simple network partition; a common-mode failure is a problem in something that is common to an entire class of devices.
A totally contrived example might be a worm that bricks routers (we've seen a few router vulnerabilities recently) and spreads with the speed of the fastest worms. Good luck finding "usable parts" of the internet when a large part of the routing capability needs to be physically replaced and reconfigured. This risk has grown in the recent past with the centralization of many services.
Is there a pre-existing network of diesel generators? Are there enough diesel generators and diesel fuel in a given city to power it? I'm guessing probably not.
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These are localized problems, not common-mode failures. I'm talking about a problem with something that takes out a significant portion of the internet. This isn't about a simple network partition; a common-mode failure is a problem in something that is common to an entire class of devices.
A totally contrived example might be a worm that bricks routers (we've seen a few router vulnerabilities recently) and spreads with the speed of the fastest worms. Good luck finding "usable parts" of the internet when a large part of the routing capability needs to be physically replaced and reconfigured. This risk has grown in the recent past with the centralization of many services.
What about a simpler idea, like sudden, widespread lack of electricity?
Diesel generators?
Is there a pre-existing network of diesel generators? Are there enough diesel generators and diesel fuel in a given city to power it? I'm guessing probably not.
Where would I put that in my apartment?