Results from the Poll

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I started last Friday a small poll to get the opinion of the security community on assigning a security level to a specific type of production process. I selected a refinery, a chemical plant (as example a Poly Propylene plant), a bulk power generation plant and a wind mill farm for power generation.

Apart from people voting for a specific security level, there was also some discussion if the question I asked was correct. And yes it was a tricky question, IEC 62443 never intended to use security levels this way. But never the less IEC 62443.3.3 did create kind of threat actor profile by using the threat actor’s intention, capabilities, resources, and motivation as the differentiator between the security levels. So one could also read the question (and this was my intention) as against what threat actor profile do we need to protect the plant. First let me show the results:

Poll results (8/13/2021 – 8/19/2021)

I leave the security level assignments

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