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CISA releases secure OT communications guide

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1 unique sources, 1 articles

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CISA released Barriers to Secure OT Communications: Why Johnny Can’t Authenticate, a new guide meant to help OT owners and operators adopt secure communications and reduce risk from insecure legacy industrial protocols. The guide also tells OT manufacturers how to lower usability barriers that slow adoption across critical-infrastructure environments. It draws on interviews with control systems stakeholders in Water and Wastewater, Transportation, Chemical, Energy, and Food and Agriculture sectors. The guidance matters because insecure OT communications can enable impersonation, message tampering, and actor-in-the-middle attacks.

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Timeline

  1. 10.02.2026 14:00 2 articles · 3mo ago

    CISA releases secure OT communications guide

    Industry Or Public Sector Update

    Cybersecurity and Infrastructure Security Agency (CISA) released Barriers to Secure OT Communications: Why Johnny Can’t Authenticate for operational technology (OT) owners and operators and OT manufacturers, using customer-led research and interviews with control systems stakeholders across Water and Wastewater Systems, Transportation Systems, Chemical, Energy, and Food and Agriculture Sectors. The guidance addresses insecure legacy industrial protocols that lack authentication and integrity checks and warns that insecure communications can enable device impersonation, message modification in transit, actor-in-the-middle attacks, and unauthorized updates.

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