Re: LOTS of US Water Plants Hit by Hacks

On 04/08/2026 08:10, rbowman wrote:
> 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.
> 
I would assume its a chip with inputs , outputs, containing a 
programmable state table

So a state machine in silly con.

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