this post was submitted on 16 Jun 2025
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[โ€“] [email protected] 0 points 1 week ago* (last edited 1 week ago) (1 children)

Your business critical system will no longer be supported with security updates which will leave it vulnerable to attack.

I guess, if it's not connected to any sort of outside network, and has no way of accepting data from media like discs or thumb drives then it's perfectly safe, but if that's the case, and it works in isolation, how "business critical" is it?

[โ€“] [email protected] 0 points 1 week ago* (last edited 1 week ago)

You would be amazed in the industrial world. There are tons of large and incredibly expensive special purpose machines that are operated by super antiquated PC architecture computers running geriatric operating systems, sometimes still even DOS or Windows 3.x.

Think industrial CNC mills and lathes, presses, pick-and-place machines, specialty lab testing equipment, electron microscopes, etc.

Process control, i.e. production line automation, is usually driven by dedicated PLCs. But the user interfaces connected to them are almost invariantly some old ruggedized panel mounted PC running Windows. An absurd number of them in my experience are still on 2000 or XP. NT4 is pretty easy to find, too.

Granted often these are not networked, and in cases where they are they're not connected to the internet, or may even talk to other workstations via RS-485 serial (!) or some other gimcrack method that is unlikely to be a vector for modern malware.