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Quantum computing and cybersecurity: a rigorous systematic review of emerging threats, post-quantum solutions, and research directions (2019–2024)

Freddie Barrett-danes, Fahad Ahmad

Discover Applied Sciences, 2025

12 citations

Abstract

This systematic review examines the transformative impact of quantum computing (QC) on cybersecurity by analysing peer-reviewed literature published between 2019 and 2024. The study identifies the most pressing emerging threats, particularly the vulnerability of classical cryptographic systems to quantum algorithms such as Shor’s and Grover’s. It assesses the current state of post-quantum cryptography (PQC) solutions, including lattice-based schemes and hybrid frameworks integrating quantum key distribution (QKD). The originality of this work lies in its focus on synthesizing research across disciplines while critically evaluating implementation readiness, economic feasibility, and scalability particularly for internet of things (IoT) environments. Key contributions include the integration of real-world pilot case studies, a preferred reporting items for systematic reviews and meta-analyses (PRISMA) -based methodological framework, and a strategic outlook for interdisciplinary collaboration. This review provides significant insight into the evolving cybersecurity landscape and offers robust recommendations for policymakers, researchers, and practitioners aiming to navigate the quantum era with confidence.

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Evidence Hub reads this as a systematic review. Its evidence level is 1 of 5 (Highest · pooled evidence). Pooled evidence from several studies sits at the top of the evidence pyramid.

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