Book Title: Modern Forensic Tools and Devices: Trends in Criminal Investigation
Editors: Mr. Ravi Kumar, Ms. Nandini Katare, Don Caeiro, and Dr. Surbhi Girdhar
Chapter: 21
DOI: https://doi.org/10.59646/658/21
Author: Ayush Verma
Abstract
The pervasive integration of digital technologies across all facets of modern society has fundamentally transformed the nature of evidence in legal and investigative contexts, with digital evidence now playing a pivotal role in criminal proceedings. However, the inherent characteristics of digital data, such as its ephemerality, malleability, and ease of duplication, introduce significant complexities in ensuring its integrity and admissibility throughout the judicial process. Consequently, maintaining a robust chain of custody for digital evidence is not merely a procedural formality but a critical imperative for upholding forensic integrity and guaranteeing the legitimacy of its source. This necessitates a rigorous, well-documented, and verifiable process that chronicles the seizure, acquisition, authentication, analysis, storage, and presentation of digital evidence. This chronological documentation, often referred to as the chain of custody, is paramount for establishing the authenticity and credibility of digital evidence in legal proceedings. The challenges associated with managing digital evidence’s chain of custody are further amplified by the involvement of various stakeholders, including law enforcement agencies, digital analysts, and the judiciary, each contributing to the complexity of ensuring its continued integrity (Patil et al., 2024). The lack of standardized protocols across different jurisdictions and among various entities further exacerbates these challenges, often leading to inconsistent practices that can jeopardize the admissibility of crucial digital evidence in court. Moreover, the distinctive attributes of digital evidence, such as its susceptibility to alteration, render its handling within the chain of custody particularly intricate. This complexity underscores the necessity for specialized digital chain of custody (dCoC) frameworks that address the unique requirements of digital evidence, ensuring its unalterable and verifiable journey from collection to court. Despite its critical importance, establishing and maintaining a reliable digital chain of custody remains a significant challenge within the field of digital forensics, presenting an open problem for researchers and practitioners alike. Specifically, issues such as the potential for evidence tampering or contamination during transfers between agencies and the subsequent difficulty in legally justifying the integrity of the chain in court represent significant hurdles.