OT DEFENSEREVIEW

Intelligence for systems that move the physical world.

Coverage desk

Architecture

Source-backed reporting and analysis connected to the companies, capabilities, authorities, and operating domains it affects.

ServiceNow completes its acquisition of Armis

The April 2026 close moves a major cyber-asset intelligence platform inside ServiceNow and puts asset identity, exposure, workflow, data use, packaging, and remediation ownership on the diligence agenda.

Dragos publishes its 2026 OT cybersecurity year in review

The provider's annual report supplies threat, vulnerability, ransomware, assessment, and incident-response observations—but its populations and methods must remain attached to every reported number.

NIST opens the SP 800-82 Rev. 4 pre-draft process

The January 2026 notice begins a revision of the central U.S. OT security guide while leaving Rev. 3 as the current final publication.

CISA and partners publish primary mitigations for exposed OT

The May 2025 fact sheet emphasizes internet exposure, credentials, remote access, segmentation, inventory, monitoring, and recovery without turning public guidance into a site-specific response plan.

CISA partners publish Secure by Demand guidance for OT buyers

The guide puts secure configuration, identity, logging, vulnerability handling, updates, support, and buyer evidence into product selection rather than leaving them for post-purchase remediation.