Reposted from CISA/DHS

On August 13, the Cybersecurity and Infrastructure Security Agency (CISA), in collaboration with other U.S. and international government partners, published a joint guide, Foundations for Operational Technology (OT) Cybersecurity: Asset Inventory Guidance for Owners and Operators. This guide presents the key elements and best practices for creating an asset inventory as well as industry-accepted approaches for developing an OT taxonomy.
An OT asset inventory and taxonomy are essential for identifying and securing critical assets, reducing the risk of cybersecurity incidents, and ensuring the continuity of the organization's mission and services. This guide helps OT owners and operations across all critical infrastructure sectors develop a systematic approach to creating and maintaining an OT asset inventory and taxonomy. By following the process in this guide, organizations can enhance their overall security posture, improve maintenance and reliability, and ensure the safety and resilience of their OT environments.
This guide was developed through the Joint Cyber Defense Collaboration and in collaboration with several organizations that include U.S. federal agencies, international agencies, and the private sector.
With our U.S. and international partners, CISA encourages owners and operators to review and implement the recommended steps to develop an OT asset inventory and taxonomy to enhance asset inventory process. We also encourage organizations to socialize this guidance within your organization and peers and provide feedback on this product. 

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