this post was submitted on 23 Sep 2025
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When I was a kid I wondered what would happen if someone set off an EMP in NYC, specifically about whether it would wipe out the data on Wall Street.
I decided they wouldn't be dumb enough to not have backups in a safe location.
As an adult, I no longer trust that assumption.
I remember there being a tiny earthquake in NYC and that fucked up the calls because everyone was just panic calling. The subway was nearby so it covered up the vibrations. My mother thought I messed up her phone somehow and blamed me for it lmfao. ("subway" was above ground so it wasn't a reception problem)
Nothing would actually be wiped out.
It's why that part in Dark Knight Returns is really fucking stupid.
The majority of finance institutions will have multiple live servers in two places. Eg. new Jersey and as far away as Virginia. Some have three.
The data itself will be in even more locations as backups, but might take a while to recover if multiple sites were attacked at once.
And they'd never do anything stupid and self destructive to make the line go up just because nothing bad has happened yet, and the collapse of a single company that did something stupid like that would never set off a national or global economic crisis.