You Can’t Protect What You Can’t See: MTSA’s Asset Inventory Mandate

This post explains MTSA cybersecurity requirements for asset inventories and provides a practical crawl/walk/run framework to discover, document, and continuously maintain OT and critical IT assets; it covers data sources, recommended deliverables, governance practices, and real-world examples to illustrate why an accurate inventory is foundational to downstream protections like segmentation and vulnerability management.