Requirement of telematic data in Brazilian criminal investigation: Diagnosis, process flow and chain of custody supported by blockchain technology
DOI:
https://doi.org/10.47909/anis.%20978-9916-9906-3-6.65Keywords:
chain of custody, digital evidence, blockchain, law enforcement requests, police investigationAbstract
After the digital revolution, criminal investigation began to work with criminal evidence from the most diverse technological sources. It often required legal measures to obtain them from technology companies and their data storage in the cloud. The general objective of the research is to describe the flow of the management process of the telematic data obtained judicially in the Brazilian criminal investigation and the main problems found based on diagnostic evaluation in the Federal Police of Brazil. From identifying these flows, analyze the leading causes and propose an automated solution for the process supported by blockchain technology based on the corresponding literature. In this work, we describe some of the main difficulties involved in managing digital evidence from police subpoenas, focusing on its pre-processing (data acquisition, organization, and storage) and the integrity of the chain of custody. The work was supported by institutional diagnostic research and bibliographical research. The results allowed inferring some conclusions that corroborate the practical scenario. There is no similar routine among the police officers; each in their work group will perform the task analogously but not in a standardized way. A web platform architecture based on blockchain technology was proposed to improve the life cycle and use telematic subpoena data in the police investigation environment.
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