A Comprehensive Analysis of Identity Theft: Definitions, Types, and Impacts

Identity theft is a complex and evolving phenomenon spanning physical, digital, algorithmic, and hybrid domains. This paper presents a systematic literature review following PRISMA guidelines to consolidate definitions, identify major and emerging subtypes, and assess impacts on individuals, organisations, and society. The study proposes a comprehensive definition that unifies fragmented and subtype‑specific descriptions in the literature and explicitly encompasses document‑based, child, offline, familial, criminal, synthetic, biometric, and algorithmic identity theft. We clarify that our bibliometric analysis reflects research attention rather than real‑world incidence and explain the practical implications of this distinction. To enhance applied value, we discuss Africa‑specific identity‑management challenges, including persistent identity document fraud, and the rise of synthetic identities, and outline how the taxonomy supports national ID authorities, policy makers, financial institutions, and fraud‑prevention bodies in South Africa and across the continent. Benefits include improved incident‑response categorisation, more comprehensive compliance checklists, enhanced risk assessments, and clearer cross‑sector communication. The review highlights a research focus bias toward financial theft and calls for further empirical work on underexplored subtypes (e.g., familial, child, algorithmic, deceased). We conclude with future research that triangulates bibliometric signals with incident statistics and operational data to inform resilient identity‑management frameworks.