<![CDATA[AbstractUnauthorized access to electronic systems presents new challenges for the criminal justice system because its evidentiary process relies heavily on electronic data that are volatile, susceptible to alteration, and require standardized forensic procedures. Although unauthorized access offenses are regulated under the Electronic Information and Transactions Law, and personal data protection has been strengthened through the Personal Data Protection Law, a gap remains between the normative framework, investigative practices, and the standardization of electronic evidence. This study aims to analyze the investigation mechanism for unauthorized access offenses, identify the problems associated with electronic evidence, and examine the integration of their handling within the framework of the Integrated Criminal Justice System (ICJS) at the Cyber Investigation Directorate of the East Java Regional Police. The study employs an empirical legal method using socio-legal, statutory, and case approaches. Primary data were obtained through interviews with investigators from the Cyber Investigation Directorate of the East Java Regional Police, while secondary data were obtained from legislation, case documents, court decisions, books, and scholarly articles. The data were analyzed qualitatively through interpretive analysis and content analysis and validated through triangulation between interview findings and case documents. The findings indicate that the investigation of Case Number 293/Pid.Sus/2023/PN Mjk operationalized the provisions of criminal procedural law, the Electronic Information and Transactions Law, the Personal Data Protection Law, and police investigative procedures. However, the practice of electronic evidence examination continues to face regulatory fragmentation, inconsistent digital forensic procedures, dependence on individual investigator capabilities, technical limitations, and suboptimal inter-agency coordination. These findings demonstrate that the primary problem is not merely the absence of a legal basis, but rather the lack of integration among legal norms, institutional structures, technical standards, and evidentiary practices within a consistent procedural regime. This study contributes to the development of an integrated cyber-investigation model through the harmonization of procedural law, standardization of digital forensic protocols, strengthening of cross-agency coordination, and enhancement of investigator capacity. The study implies the need for integrated technical guidelines on electronic evidence and stronger implementation of the ICJS to ensure the authenticity of evidence, procedural consistency, protection of rights, and legal certainty.Keywords: Unauthorized Access; Electronic Evidence; Digital Forensics; Cyber Investigation; Integrated Criminal Justice System]]>
