PD CEN/TS 18053-1:2024 - Page 2

Digital Chain of Custody for CBRNE Evidence. Overview and Concepts | Status: Current

1 Scope This document provides an overview of the concept of Custody Transfer Point (CTP) within the digital Chain of Custody (dCoC) process, including the identification and audit of the custody ownership and metadata governance to ensure the integrity of the data at each CTP. The document also provides:

• • Definitions of the concepts within the dCoC process related to the digital evidence log for each custody transfer (i.e. who owns the custody at each transfer point);
• • General guidelines for the data governance process within the CTP lifecycle, including identification of the role of the stakeholders;
• • Digital metadata management policies and compliance with good practices for non-repudiation of the reported data regarding the ownership of digital evidence items within the custody transfer lifecycle.

This is part one of two documents for the provision of Digital Custody Metadata (DCM) for managing data related to the custody of digital evidence items. Part 2 complements this document by providing detailed guidance on the steps in the data governance process within each CTP lifecycle. The document aims to provide guidance to both technical and non-technical personnel, including individuals accountable for compliance with statutory and regulatory requirements and industry standards. It is designed to be helpful for a broad range of professionals, regardless of their technical expertise, ensuring that all stakeholders involved in implementing the document's recommendations can understand and follow them effectively.