Cloud providers are wasting their time pursuing NERC CIP
- Nov 17, 2021 3:59 pm GMT
Last week, my friend Maggy Powell of AWS put up a post on LinkedIn that provided a link to their most recent document regarding NERC CIP, described by Maggy as the “AWS User Guide to Support Compliance with NERC CIP Standards”. She further states that “The User Guide describes key concepts for customers considering CIP regulated workloads in the cloud.”
Dale Peterson asked me for my comments on the document. Before I downloaded it, I pointed to this post from last year, where I tried to summarize the problem preventing NERC entities from deploying Medium or High impact BES Cyber Systems in the cloud (they’re free to deploy Low impact BCS in the cloud now). So I reviewed (skimmed, I’ll admit) the AWS document to see if it had anything to say that would change the situation enough to make it at least possible that Medium or High BCS could be put in the cloud.
It didn’t. Like the document and presentation that Microsoft Azure prepared for the NERC CIPC (remember the CIPC?) in around 2016, AWS seems to think that what needs to be done is just convince NERC and utilities that AWS has good security. That has nothing to do with the real problem, as my previous post explains. There’s literally nothing that AWS, Microsoft, or anyone else – other than NERC, the Regions, the NERC entities, and FERC – can do to change the situation, absent a wholesale revision of the CIP standards. I replied to Dale:
I skimmed through the AWS document, but it was unfortunately as I expected. It tells you everything you need to know about AWS security, except the one thing that matters for CIP: How AWS could possibly produce the evidence required for the utility to prove compliance with about 25 of the CIP requirements, if they put BCS in the cloud.
And the answer to that question remains what I wrote last fall: There's no way any cloud provider could do that, without breaking their business model.
NERC CIP won't permit BCS in the cloud until it's completely rewritten as a risk based compliance regime (which involves revising the NERC Rules of Procedure as well). What's also required is for the focus on devices to go away, and the new focus be on systems. This is exactly what the CIP Modifications SDT proposed in 2018 (a year or so after Maggy left as chairperson), and it got shot down by the big utilities, because they didn't want to have to make big changes to their procedures, etc.
That's the barrier. Until that's overcome, BCS will never be in the cloud, period. I don't see any movement toward this currently, but I'd be glad to help out the insurrectionists if they materialize.
I’ll close by paraphrasing the ending to my post linked above:
Of course, changing CIP will require a much more fundamental revision of the CIP standards than even CIP version 5 was. Doing what I’m suggesting will require widespread support among NERC entities, and I see no sign of that now. Does that mean BCS will never be allowed in the cloud?
I actually believe it will happen, although I won’t say when, because I don’t know (it definitely won’t be soon). I think the advantages the cloud can provide for NERC entities are so great that they will ultimately outweigh the general resistance to change. But the NERC entities themselves need to be able to change. Until that happens, there will be no BCS in the cloud, period.
Any opinions expressed in this blog post are strictly mine and are not necessarily shared by any of the clients of Tom Alrich LLC. Nor are they shared by the CISA’s Software Component Transparency Initiative, for which I volunteer as co-leader of the Energy SBOM Proof of Concept. If you would like to comment on what you have read here, I would love to hear from you. Please email me at firstname.lastname@example.org.
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