DISCLAIMER This report was prepared as an account of work sponsored by an agency of the U.S. Government. Neither the U.S. Government nor any agency thereof, nor any employee, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for any third party’s use, or the results of such use, or any information, apparatus, product, or process disclosed in this publication, or represents that its use by such third party would not infringe privately owned rights. ACKNOWLEDGMENT This document was developed by the U.S. Department of Homeland Security to help facilitate the development of control systems cybersecurity industry standards. The original author team consisted of representatives from the Department of Homeland Security Control Systems Security Program (CSSP), National Institute of Standards and Technology (NIST), Argonne National Laboratory (ANL), Idaho National Laboratory (INL), Oak Ridge National Laboratory (ORNL), Pacific Northwest National Laboratory (PNNL), and Sandia National Laboratories (SNL). For additional information or comments, please send inquires to the Control Systems Security Program at
[email protected] with the word “Catalog” in the subject line. iii iv EXECUTIVE SUMMARY This catalog presents a compilation of practices that various industry bodies have recommended to increase the security of control systems from both physical and cyber attacks. The recommendations in this catalog are grouped into 19 families, or categories, that have similar emphasis. The recommendations within each family are displayed with a summary statement of the recommendation, supplemental guidance or clarification, and a requirement enhancements statement providing augmentation for the recommendation under special situations. This catalog is not limited for use by a specific industry sector.