The Cybersecurity and Infrastructure Security Convergence Action Guide describes the complex threat environment created by increasingly interconnected cyber-physical systems, and the impacts that this interconnectivity has on an organization’s cybersecurity and physical security functions. It also provides information that organizations can consider to adopt a holistic cyber-physical security approach through a flexible framework.
https://www.cisa.gov/sites/default/files/publications/Cybersecurity and Physical Security Convergence_508_01.05.2021.pdf