CISA, along with global partners, released the “Foundations for OT Cybersecurity” guide to help critical infrastructure sectors strengthen defenses through robust asset inventory practices. Based on ISA/IEC 62443 standards, the guidance urges classification of OT assets, tracking 14 key attributes, and integrating real-time threat intelligence like MITRE’s CVE and KEV catalogs. It targets sectors like energy, water, and manufacturing, where legacy systems and weak security expose ICS, SCADA, and PLCs to growing cyber threats.