KEV Deadlines Meet the Maintenance Window: A Practical OT Patch Cadence for CISA’s New Pace

Plant engineer reviewing control system alerts on an industrial HMI screen

CISA’s Known Exploited Vulnerabilities catalog is moving faster and reaching deeper into ICS/OT, but plants still can’t reboot a PLC mid-shift. Here’s how to triage advisories, build a defensible patch cadence, and document it so it holds up in an audit.

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Drawing Zones and Conduits That Survive Contact With a Real Plant Floor

Engineer reviewing an OT network segmentation diagram on a laptop near plant equipment

Segmentation-first OT guidance is turning up in insurance renewals and customer questionnaires, but the standard’s zone-and-conduit model breaks down fast when applied by device type. Here’s how to draw it by consequence instead, and defend it to an auditor without a full re-architecture.

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