I’ve worked on networks for water systems as well and you are right, the problem is people. Weak or default passwords, little to no physical security, it all comes down to the people in charge.
In this side of networking, typically accessibility is considered more important than security as they don’t want to be locked out of something in a pinch. With recent hacks, the opinion is changing, but slowly. The industrial world moves at snails pace compared to the enterprise side. They operate on a if it’s not broke don’t fix mentality.
My company deploys a lot of cell modems. Some of them support containers. It’s really nice to deploy everything we need in one piece of equipment, as opposed to 2 or more, for a very simple application.
Several other pieces of network equipment support it now as well. A SIEM can run a remote node directly on a switch.
Texas: Nah we good