Re: LOTS of US Water Plants Hit by Hacks

On Mon, 3 Aug 2026 20:50:24 -0400, c186282 wrote:

>    Anyway, hardware PLCs are pretty stupid - you don't actually hack
>    them directly. They're basically a replacement for a box of relays or
>    equivs. Software PLCs - a uC or even better - are more "computers",
>    oft net-connected these days. An Ard Uno would make a fair software
>    PLC. A low-end PI even better.

https://www.realpars.com/blog/plc-hardware

What's a hardware PLC? It amazed me to find that they still use the ladder 
logic metaphor. I thought that was a temporary crutch when they started 
showing up in the '70s.