Your Segmentation Diagram Is Lying to You, and CISA’s Attestation Push Is About to Prove It

Engineer reviewing a network segmentation diagram overlaid on plant floor equipment

CISA’s secure-by-design attestation framework and cyber insurers are both starting to ask for proof of OT segmentation, not just a diagram of it. Most plants will fail that test — here’s how to close the gap using tools you already own.

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