IEC 62443-4-2 certification badges are now common on PLC, HMI, and remote-access datasheets, but the certificate describes what a component can do, not what your plant actually has. Here’s how to read the claim correctly and turn it into a real zone/conduit design.
Read More
When a CISA KEV-listed vulnerability shows up in a PLC that can’t be patched until the next scheduled outage, the answer isn’t to ignore the SLA — it’s to build a compensating-control case that holds up when an insurer or OEM auditor asks for proof.
Read More
CISA and sector regulators are asking for component-level software visibility into ICS environments, but most plants can’t produce an SBOM for a PLC on demand. Here’s a maturity model for getting there.
Read More
Citing IEC 62443 in a purchase order without target security levels and evidence requirements is a paper shield — here’s how to write SL-T clauses that let you actually reject a bad bid.
Read More
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.
Read More
Manufacturers are writing OT recovery time objectives into insurance forms and security questionnaires without ever timing a real MES-to-PLC restore. Here’s what a tested plan actually requires.
Read More
IT wants zero trust plant-wide; OT already has zone and conduit segmentation under IEC 62443. Here’s where those two models actually agree, where they collide, and how to write a joint policy that survives both audits.
Read More
CISA’s ICS advisories keep getting more frequent and more specific, but most plants still respond to all of them the same way — slowly. Here’s a practical framework for triaging by Purdue level, exploitability, and asset reality within 72 hours.
Read More
CISA’s tightening cadence on ICS advisories and SBOM/VEX expectations creates real work for plant teams, not just vendors — here’s a practical triage workflow for the Monday-morning “what do we do with this” problem.
Read More
CISA’s secure-by-design push and NIST CSF 2.0 are pointing toward mandatory SBOM ingestion for OT asset owners, but most plants still can’t consume a machine-readable SBOM even when the vendor hands them one. Here’s how to actually build that workflow.
Read More