🛡️ **DEVELOPING — NIST Issues OT Security Guidance Amid Critical Infrastructure Cyberattack Activity**
Published Wednesday, August 19, 2026 at 10:39 AM PT BLUF: NIST has released tips and tactics for building automation and control system cybersecurity in response to recent cyberattacks targeting operational technology (OT) in critical infrastructure. Specific attack vectors and affected sectors are not confirmed in available material; treat as guidance release pending threat intelligence clarification. DETAILS NIST Cybersecurity Blog published guidance on building automation and control system security in direct response to “recent cyberattacks” on operational technology used in critical infrastructure. The guidance is tactical (tips and tactics format), suggesting actionable defense measures for infrastructure owners/operators and service consumers. Related NIST activities indicate broader OT/IoT security focus: SP 1326 (supplier due diligence), Transit Profile (transit agency risk prioritization across IT/OT), and AI-enabled vulnerability management modernization efforts are concurrent or recent. The advisory frames cybersecurity as a priority for both infrastructure owners and consumers of infrastructure services. Specific attack details, affected sectors, and tactical guidance content are not provided in available material—only the fact that attacks triggered the release. IMPACT ...