As technology continues to evolve, cybersecurity measures tend to be vulnerable to the computational power of quantum computers. These computers perform calculations faster than classical computers. This ability to solve tasks within polynomial time threatens current cybersecurity practices through Shor's and Grover's algorithms. Classical computers rely on mathematical hardness assumptions and are vulnerable to quantum attacks. This paper scrutinizes the double effects of quantum computing on cybersecurity and its ability to support post-quantum resistant technologies. A systematic literature review (SLR) of 24 peer-reviewed articles (2021-2025) obtained from IEEE Xplore, SpringerLink, ACM, and Google Scholar was conducted, and the results identified three integral themes. Firstly, 80% of quantum computing threats studies analysed prove that Shor's algorithm can efficiently factorise large integers, rendering Rivest Shamir Alderman and Elliptic Curve Cryptography obsolete. Secondly, 65% of the studies show that Post-Quantum Cryptography (PQC) offers quantum-resilience in the foreseeable future. In comparison, 25% of Quantum Key Distribution (QKD) papers show practical barriers like signal loss and standardization delays. 15% of studies reveal the urgent need for regulatory and ethical concerns. Key results highlight the urgent need for hybrid cryptographic systems that combine quantum key distribution and post-quantum cryptography, as proposed by 40% of recent publications. 46% of studies show that Europe leads quantum cybersecurity research, driven by collaborative policy efforts. This study suggests practical recommendations for accelerated adoption of NIST-standardised PQC algorithms, investment in QKD infrastructure for critical sectors, and multidisciplinary collaboration to address technical, legal, and ethical gaps. This paper provides a roadmap for mitigating quantum threats and leveraging quantum technologies to transform cybersecurity resilience in the digital era.
As technology continues to evolve, cybersecurity measures tend to be vulnerable to the computational power of quantum computers. These computers perform calculations faster than classical computers. This ability to solve tasks within polynomial time threatens current cybersecurity practices through Shor's and Grover's algorithms. Classical computers rely on mathematical hardness assumptions and are vulnerable to quantum attacks. This paper scrutinizes the double effects of quantum computing on cybersecurity and its ability to support post-quantum resistant technologies. A systematic literature review (SLR) of 24 peer-reviewed articles (2021-2025) obtained from IEEE Xplore, SpringerLink, ACM, and Google Scholar was conducted, and the results identified three integral themes. Firstly, 80% of quantum computing threats studies analysed prove that Shor's algorithm can efficiently factorise large integers, rendering Rivest Shamir Alderman and Elliptic Curve Cryptography obsolete. Secondly, 65% of the studies show that Post-Quantum Cryptography (PQC) offers quantum-resilience in the foreseeable future. In comparison, 25% of Quantum Key Distribution (QKD) papers show practical barriers like signal loss and standardization delays. 15% of studies reveal the urgent need for regulatory and ethical concerns. Key results highlight the urgent need for hybrid cryptographic systems that combine quantum key distribution and post-quantum cryptography, as proposed by 40% of recent publications. 46% of studies show that Europe leads quantum cybersecurity research, driven by collaborative policy efforts. This study suggests practical recommendations for accelerated adoption of NIST-standardised PQC algorithms, investment in QKD infrastructure for critical sectors, and multidisciplinary collaboration to address technical, legal, and ethical gaps. This paper provides a roadmap for mitigating quantum threats and leveraging quantum technologies to transform cybersecurity resilience in the digital era.
This study explores the dual impact of quantum computing on cybersecurity, focusing on the challenges it poses to existing cryptographic standards and the opportunities it presents for enhancing secure communication. Through a comprehensive review of current literature and analysis of emerging quantum-resistant technologies such as Quantum Key Distribution (QKD) and Post-Quantum Cryptography (PQC), the research identifies key vulnerabilities in traditional encryption methods and outlines the potential of quantum technologies to revolutionize cybersecurity practices. The study emphasizes the urgent need for the development and standardization of quantum-resistant cryptographic solutions to safeguard digital assets against the computational capabilities of quantum technologies. Policy recommendations are psroposed to accelerate the adoption of quantum-safe standards and to foster collaboration among stakeholders in the cybersecurity ecosystem. Furthermore, the study highlights areas for future research, including the scalability of quantum-resilient solutions and the ethical implications of quantum computing on privacy and security. Conclusively, the findings suggest that a proactive and collaborative approach is essential for navigating the quantum computing era, underscoring the importance of preparing a quantum-resilient cybersecurity infrastructure to ensure the long-term security of digital communications and assets.
The rapid advancement of quantum computing poses both transformative opportunities and profound challenges for modern cybersecurity and cryptography. Unlike classical computers, quantum systems leverage the principles of quantum mechanics-superposition, entanglement, and quantum tunneling-to process information in fundamentally new ways, enabling exponentially faster computation for certain problems. This paradigm shift threatens to render many of today's widely adopted cryptographic algorithms obsolete, particularly those relying on the hardness of integer factorization (e.g., RSA) and discrete logarithms (e.g., ECC and DSA). Quantum algorithms, such as Shor's algorithm, have the potential to break these cryptosystems in polynomial time, exposing sensitive data to unprecedented levels of vulnerability. Additionally, Grover's algorithm accelerates brute-force attacks on symmetric encryption schemes, reducing their effective security strength by half. This paper explores the implications of quantum computing on current cryptographic infrastructures, highlighting the urgency for transitioning to quantum-resistant or postquantum cryptographic algorithms. It examines emerging standards from bodies such as NIST, which are fostering the development and evaluation of lattice-based, codebased, multivariate polynomial, and hash-based cryptographic solutions. Furthermore, the study delves into the dual-edged nature of quantum computing in cybersecuritydiscussing its potential not only as a threat but also as a powerful tool for enhancing security through quantum key distribution (QKD), quantum random number generation, and other quantum-enhanced protocols. The work concludes by evaluating the readiness of current systems for the "quantum threat," identifying gaps in awareness, infrastructure, and policy, and proposing a strategic roadmap for a secure transition into the post-quantum era. As the quantum revolution accelerates, understanding and preparing for its cybersecurity ramifications is not merely a technical necessity but a cornerstone of global digital resilience.
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.
Quantum computing, a transformative leap in computational science, is rapidly emerging as a disruptive force capable of reshaping the foundational pillars of cybersecurity and cryptography. Unlike classical computing, which relies on binary states, quantum computing utilizes quantum bits (qubits), leveraging the principles of superposition, entanglement, and quantum tunneling to perform complex calculations at unprecedented speeds. This paradigm shift poses a dual-edged impact on the field of cybersecurity: it offers unparalleled potential for advancing secure communication through quantum cryptographic protocols such as Quantum Key Distribution (QKD), while simultaneously threatening the integrity of classical encryption methods like RSA and ECC, which could be rendered obsolete by quantum algorithms like Shor's and Grover's. This paper explores the current state of quantum computing, its implications for existing cryptographic infrastructures, and the urgent need for post-quantum cryptography (PQC) standards. It also examines governmental and institutional responses to the quantum threat, including NIST's ongoing PQC standardization efforts, and the development of hybrid cryptographic models that combine quantumresistant algorithms with classical security measures. Furthermore, the study discusses ethical considerations, regulatory challenges, and the importance of global cooperation in transitioning to a quantum-secure digital future. As quantum technology progresses from theoretical frameworks to practical applications, cybersecurity must evolve in tandem to address both its promises and perils.
The advent of quantum computing heralds a transformative shift in the computational landscape, offering unparalleled processing power that promises to solve complex problems far beyond the reach of classical computing. This quantum leap also poses significant challenges to the foundations of current cybersecurity practices, especially encryption methods that safeguard digital communications and data. This article delves into the implications of quantum computing for cybersecurity, highlighting the vulnerabilities it exposes in traditional cryptographic algorithms, such as RSA and ECC, which could be broken in a post-quantum world. By examining the timeline for quantum computers to become a practical threat and analyzing specific quantum attacks, the paper emphasizes the urgency of developing quantum-resistant cryptographic standards. It explores the potential of post-quantum cryptography (PQC) and quantum key distribution (QKD) as viable defenses against quantum threats, alongside the challenges in implementing these quantum-safe measures. The article also addresses strategic approaches for mitigating quantum risks, including policy and regulatory considerations, and the role of international collaborations in preparing the cybersecurity infrastructure for the quantum era.
The emergence of quantum computing is set to reshape the landscape of cybersecurity, presenting a blend of significant challenges and groundbreaking opportunities. This paper delves into the growing risks tied to quantum technologies, with a particular focus on post-quantum cryptography (PQC) and the threats posed by the possible obsolescence of traditional cryptographic methods. As quantum computing capabilities advance at a rapid pace, the need for the development of quantum-resistant security protocols has become more urgent than ever. This research investigates the vulnerabilities of current cryptographic systems, the potential dangers posed by quantum computing, and the solutions already available in the field of post-quantum cryptography. Furthermore, the paper outlines a comprehensive framework for cybersecurity solutions that are resilient to future quantum threats, emphasizing the importance of collaboration across academic, industrial, and governmental sectors. By reviewing current literature and technological developments, this paper provides a roadmap for transitioning to quantum-safe security practices, addressing the risks brought on by quantum advancements, and ensuring that critical infrastructure is well-defended against quantum-driven attacks. The findings indicate that while quantum computing introduces profound risks to traditional cybersecurity systems, a proactive, strategic adoption of PQC solutions can effectively protect vital infrastructure in the post-quantum age.