Multiple Case Study Validation of Online Social Networks Forensic Investigation Metamodel (OSNFIM)

Abstract

Digital Forensic Investigation is facing complex challenges due to the proliferation of the online social networks (OSNs). This necessitates the development of robust frameworks to guide the whole investigation process. In order to address these challenges, a structured and comprehensive framework; the Online Social Networks Forensic Investigation Metamodel (OSNFIM) was developed. Also, to evaluate the applicability, dependability, performance, and efficiency of OSNFIM across retrospective documented investigations cases, multiple case study validation technique was applied to examine three distinctive and documented cases in this study, based on the four phases of the OSNFIM; Preliminary, Acquisition/Preservation, Analysis, and Presentation. The validation process ensures that each conceptual element is addressed through each phase by following the OSNFIM framework. The validation has demonstrated the applicability of the OSNFIM framework to various OSN-related forensic investigations. By validating a metamodel that improves investigative precision in the landscape of OSNs, this research has contributed to the rising field of digital forensics.