this post was submitted on 30 Jun 2026
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I worked in water treatment during an internship and learned about air gapping. You make it so that data can go out for monitoring, but nothing can come in. You need physical access to make changes. Because if someone can control it remotely, that means anyone can control it remotely.
I mean, SSH would create some barriers that makes this question even more relevant, if there was a weakness somewhere (even if just because remote access was available), it better have been a result of user error and not poor infrastructure design.