From the Document: "Chain of custody is a complex process. Often associated with the preservation of evidence for law enforcement, chain of custody also plays an important role in security and risk mitigation for critical infrastructure sectors and their assets. Without secure chain of custody practices, critical infrastructure systems and assets could be unknowingly accessed and manipulated by threat actors. The integrity of critical infrastructure assets and systems could also be questioned, with the inability of critical infrastructure owners and operators to prove otherwise. This CISA [Cybersecurity and Infrastructure Security Agency] Insights provides an overview of what chain of custody is, highlights the potential impacts and risks resulting from a broken chain of custody, and offers critical infrastructure owners and operators an initial framework for securing chain of custody for their physical and digital assets."
U.S. Department of Homeland Security Cybersecurity and Infrastructure Security Agency: https://www.cisa.gov/