People who build SCADA systems over local and wide area networks seem to have this notion that bandwidth and latency are not limiting factors, and security is a problem for someone else. Oh, if only that were true. The first thing everyone should do when working with a new RTU is to disable the services […]

In seeking international cyber norms for states, one should be careful about blowing smoke, sometimes it could start a fire.

Cyberspace by its very nature has an international dimension. Without it, there would be no possibility for the Internet to grow and function. In turn, threats that come from cyberspace also require an international response. Especially the threats to the devices used to monitor and control processes in critical infrastructure from state resourced APT’s. Threats […]

What Features Should an RTU Have?

People may not realize that the concept of the RTU is morphing. In decades past, we were merely looking for something that could report an event. But the goal-posts have moved. So what should an RTU really look like these days? Let’s look at some features: First, the RTU needs to have a clock. As […]

Uninterruptible Power Systems? HAH!

I’m ranting again. This is a recurring plague for me. Allow me to just get this out of my system right now: DELIVER ME FROM THOSE AWFUL OFFICE-GRADE UPS BOXES! I hate the damned things. Why? Because some idiot who can’t be bothered to deal with the more difficult issues just grabs one off the […]

Patching and Upgrading PLC Systems

A certain well known vendor of PLC equipment has been earning some heat from me recently. I’m not mentioning names because frankly, all of these big name vendors are facing the same problems. The issue is that even if we didn’t find sufficient reason to patch programs in a PLC, we’re finding that we have […]

Physical Layer Concerns

One of the more troublesome aspects of a control system is detecting when the I/O is broken versus a security problem of some sort. This is one of the keys between knowing that you’re being hacked versus having some sort of hardware failure. With that in mind, these are some measures I have found to […]