The advent of Quantum Technology (QT) and its application in Quantum Computing (QC) marks the next major technological frontier following Artificial Intelligence, by prompting significant investment from governments and global corporations, particularly from the financial sector. The immense data processing capabilities of QC are poised to revolutionize finance, offering new avenues for optimizing complex financial transactions and enhancing fraud detection systems. However, such technological leap simultaneously introduces a critical and urgent risk to global cybersecurity and, by extension, the stability of the financial markets. Specifically, such computational power inherent in advanced quantum systems fundamentally compromises the cryptographic algorithms which are currently used in electronic financial transactions, which may cause instability and thereby pose substantial risk across the financial ecosystem. Major countries are taking proactive actions to address such risk by initiating policy transitions toward quantum security and considering adopting Post-Quantum Cryptography (PQC). These jurisdictions are actively preparing a shift in their digital infrastructure to mitigate the inevitable risk of a “Store Now, Decrypt Later” attack. In stark contrast, domestic discussions and policy preparations for this critical security transition remain relatively inactive in South Korea. Such regulatory and policy gap highlights an urgent need to adopt preemptive action to safeguard the nation’s financial integrity. Given the circumstances, this paper, therefore, examines the current legal and regulatory framework in South Korea related to cryptographic systems in electronic finance, identifies specific legislative deficiencies, and proposes concrete measures to overcome such risks. To effectively manage the rapid technological shifts characteristic of the Fourth Industrial Revolution, this paper will focus how South Korea should align with international trends by prioritizing a regulatory approach centered on soft law and non-binding guidelines, rather than imposing rigid, strict legal regulations. Furthermore, the paper will emphasize the importance of adopting a purposive (teleological) interpretation of existing and future laws to ensure regulatory frameworks remain agile and relevant in the face of continuous technological evolution. Based on such legislative and interpretive foundations, the paper aims to stress the necessity for South Korea to actively engage with major international stakeholders and foreign countries as such international cooperation is crucial not only for collectively strengthening global financial cybersecurity but also for reducing the risk of regulatory fragmentation in a complex and interconnected quantum security landscape.
The advent of Quantum Technology (QT) and its application in Quantum Computing (QC) marks the next major technological frontier following Artificial Intelligence, by prompting significant investment from governments and global corporations, particularly from the financial sector. The immense data processing capabilities of QC are poised to revolutionize finance, offering new avenues for optimizing complex financial transactions and enhancing fraud detection systems. However, such technological leap simultaneously introduces a critical and urgent risk to global cybersecurity and, by extension, the stability of the financial markets. Specifically, such computational power inherent in advanced quantum systems fundamentally compromises the cryptographic algorithms which are currently used in electronic financial transactions, which may cause instability and thereby pose substantial risk across the financial ecosystem. Major countries are taking proactive actions to address such risk by initiating policy transitions toward quantum security and considering adopting Post-Quantum Cryptography (PQC). These jurisdictions are actively preparing a shift in their digital infrastructure to mitigate the inevitable risk of a “Store Now, Decrypt Later” attack. In stark contrast, domestic discussions and policy preparations for this critical security transition remain relatively inactive in South Korea. Such regulatory and policy gap highlights an urgent need to adopt preemptive action to safeguard the nation’s financial integrity. Given the circumstances, this paper, therefore, examines the current legal and regulatory framework in South Korea related to cryptographic systems in electronic finance, identifies specific legislative deficiencies, and proposes concrete measures to overcome such risks. To effectively manage the rapid technological shifts characteristic of the Fourth Industrial Revolution, this paper will focus how South Korea should align with international trends by prioritizing a regulatory approach centered on soft law and non-binding guidelines, rather than imposing rigid, strict legal regulations. Furthermore, the paper will emphasize the importance of adopting a purposive (teleological) interpretation of existing and future laws to ensure regulatory frameworks remain agile and relevant in the face of continuous technological evolution. Based on such legislative and interpretive foundations, the paper aims to stress the necessity for South Korea to actively engage with major international stakeholders and foreign countries as such international cooperation is crucial not only for collectively strengthening global financial cybersecurity but also for reducing the risk of regulatory fragmentation in a complex and interconnected quantum security landscape.
Abstract Quantum computing is rapidly advancing from a theoretical possibility to a transformative force in financial systems. With its high-dimensional computational capacity, quantum technology is promising for enhancing risk modelling, fraud detection and transaction efficiency. However, it also seriously threatens cryptographic security, regulatory coherence and systemic stability. This paper critically analyses the risks introduced by cryptographically relevant quantum computers and assesses the readiness of legal and institutional frameworks to respond. Focusing on the UK financial regulatory environment, the study proposes a quantum-safe integration roadmap grounded in post-quantum cryptography, adaptive regulatory models and sector-wide governance strategies. The paper argues for anticipatory regulation that embeds enforceable standards and strategic collaboration across public and private stakeholders through an interdisciplinary approach combining legal analysis and financial risk modelling. The UK’s leadership in quantum policy positions it to shape international norms in secure quantum adoption. Finally, the paper offers an analytical framework to ensure that quantum innovation reinforces rather than destabilises data integrity, financial resilience and public trust.
The financial sector faces escalating cyber threats amplified by artificial intelligence (AI) and the advent of quantum computing. AI is being weaponized for sophisticated attacks like deepfakes and AI-driven malware, while quantum computing threatens to render current encryption methods obsolete. This report analyzes these threats, relevant frameworks, and possible countermeasures like quantum cryptography. AI enhances social engineering and phishing attacks via personalized content, lowers entry barriers for cybercriminals, and introduces risks like data poisoning and adversarial AI. Quantum computing, particularly Shor's algorithm, poses a fundamental threat to current encryption standards (RSA and ECC), with estimates suggesting cryptographically relevant quantum computers could emerge within the next 5-30 years. The "harvest now, decrypt later" scenario highlights the urgency of transitioning to quantum-resistant cryptography. This is key. Existing legal frameworks are evolving to address AI in cybercrime, but quantum threats require new initiatives. International cooperation and harmonized regulations are crucial. Quantum Key Distribution (QKD) offers theoretical security but faces practical limitations. Post-quantum cryptography (PQC) is a promising alternative, with ongoing standardization efforts. Recommendations for international regulators include fostering collaboration and information sharing, establishing global standards, supporting research and development in quantum security, harmonizing legal frameworks, promoting cryptographic agility, and raising awareness and education. The financial industry must adopt a proactive and adaptive approach to cybersecurity, investing in research, developing migration plans for quantum-resistant cryptography, and embracing a multi-faceted, collaborative strategy to build a resilient, quantum-safe, and AI-resilient financial ecosystem
The advent of quantum supremacy, defined as the point at which quantum computers outperform classical systems in solving computational problems, represents a paradigm shift with profound implications for the field of cryptography, particularly in the context of secure financial transactions. Classical cryptographic techniques, such as public-key encryption systems that rely on the computational hardness of problems like integer factorization and discrete logarithms, are foundational to modern financial security architectures. However, the accelerated computational capabilities of quantum systems, driven by Shor’s and Grover’s algorithms, render these traditional cryptographic methods vulnerable to compromise. This paper delves into the potential impact of quantum computing on cryptographic frameworks, emphasizing its disruptive influence on secure communication protocols, authentication systems, and transaction mechanisms within digital financial ecosystems. A comprehensive analysis of quantum-resistant cryptographic algorithms, collectively termed post-quantum cryptography (PQC), is presented as a critical countermeasure to these emerging threats. The paper explores lattice-based cryptography, hash-based signatures, code-based encryption, multivariate polynomial cryptography, and isogeny-based cryptographic schemes, evaluating their robustness against quantum adversaries. Through a rigorous examination of these algorithms’ theoretical foundations and practical implementations, the study identifies strengths, limitations, and potential deployment challenges. Special attention is devoted to the trade-offs between computational efficiency, security guarantees, and scalability, which are critical considerations for the widespread adoption of PQC in financial systems. Additionally, the study highlights the transitional challenges posed by integrating post-quantum cryptographic methods into existing infrastructures. Financial institutions, reliant on legacy systems and global interoperability standards, face significant hurdles in adopting quantum-resilient solutions. These include the need for standardized cryptographic protocols, cross-platform compatibility, and resistance to side-channel attacks. The research underscores the urgency of proactive measures to safeguard critical financial systems, including the development of hybrid cryptographic models that incorporate both classical and post-quantum techniques during the transition phase. Furthermore, the role of regulatory frameworks in mandating the adoption of quantum-safe protocols is examined, along with the potential for collaborative efforts among governments, financial institutions, and cryptographic researchers to ensure a coordinated response to the quantum threat landscape. The implications of quantum supremacy extend beyond technical considerations, affecting the trust and stability of global financial systems. This paper provides strategic recommendations for mitigating risks, including the prioritization of research into quantum-resistant algorithms, the establishment of testing environments for post-quantum solutions, and investment in the development of quantum-secure hardware. By leveraging these strategies, financial ecosystems can enhance their resilience against quantum-induced vulnerabilities. The discussion is substantiated with case studies and simulations that evaluate the performance of post-quantum algorithms in real-world financial contexts, illustrating their effectiveness in securing digital transactions against quantum attacks. By bridging the gap between theoretical advancements and practical implementations, this paper contributes to the ongoing discourse on the future of cryptography in the quantum era. Ultimately, the research aims to provide a comprehensive roadmap for securing digital financial ecosystems against the disruptive potential of quantum computing, ensuring the continued reliability and integrity of secure financial transactions in the face of emerging technological challenges.
Quantum computing is advancing rapidly and is expected to reshape the cybersecurity foundations of the financial sector. Modern financial systems rely heavily on classical public-key cryptography such as Rivest-Shamir-Adleman (RSA) and elliptic-curve cryptography (ECC), which are vulnerable to quantum algorithms capable of breaking current encryption schemes. As these technologies mature, financial institutions face growing pressure to transition toward quantum-resistant security frameworks that can preserve the confidentiality and integrity of financial data. This paper reviews the role of quantum cryptography in finance and describes how governments, regulators, and financial institutions are preparing for the transition to quantum-resilient security systems. Drawing on academic literature, institutional reports, and organizational case studies, the analysis explores the technical, regulatory, and economic factors shaping the adoption of post-quantum security measures across global financial networks. Particular attention is given to hybrid security strategies that combine post-quantum cryptography (PQC) with quantum key distribution (QKD), which are emerging as practical solutions for strengthening communication security while maintaining operational performance. The findings highlight substantial disparities in national and institutional readiness, with higher-income countries and large financial organizations leading pilot programs and infrastructure investments while lower-capacity systems remain dependent on legacy encryption. These differences create uneven levels of protection across interconnected financial networks and increase the risk of systemic vulnerability. The paper concludes that coordinated standards, phased implementation strategies, and sustained investment in technical capacity will be essential for maintaining secure and stable financial systems in the quantum era.
This article examines the legal regulation of quantum communications in the financial sector, which is viewed as a priority area for ensuring information security and the resilience of the national economy. It is noted that the rapid development of quantum computing is fundamentally altering the balance in the field of cybersecurity: in the foreseeable future, traditional cryptographic mechanisms may lose their robustness, creating risks for the functioning of the national payment system, the stability of credit and financial institutions, and public trust in financial transactions. In these circumstances, quantum key distribution (QKD) and post-quantum algorithms become key instruments capable of ensuring a fundamentally new level of information protection and of shaping a sustainable architecture of digital security. The methodological basis of the study consists of comparative legal analysis and a comparison of foreign regulatory practices (the European Union, Singapore, China and Brazil) with Russian strategic instruments and pilot initiatives. International experience shows that the implementation of quantum communications is pursued through inclusion in strategic programmes, development of standards, creation of “regulatory sandboxes,” and support for pilot projects. Particular attention is given to the need to harmonise national approaches and to develop international agreements capable of eliminating regulatory fragmentation. A domestic model of legal regulation is taking shape in Russia: concepts and roadmaps through 2030 have been approved; preliminary national standards (PNST 829–832) have been adopted; the GOST R 57580.x series is being developed; quantum cryptography tools are being certified; and pilot projects are being implemented with the participation of major financial organisations. At the same time, the study identifies barriers hindering further development—fragmentation of the regulatory framework, complex procurement procedures, and insufficient institutional coordination among the state, business and the academic community. Priority areas are proposed, including institutionalisation of experimental legal regimes, establishment of permanent expert platforms, expansion of pilot-project practice, harmonisation of national rules with international initiatives, and development of a national quantum communications infrastructure. The article concludes that consolidation of legal, organisational and technical measures will strengthen technological sovereignty and ensure long-term protection of the financial system against quantum threats.
"The rapid advancement of quantum computing poses a significant threat to the cybersecurity of our increasingly digitized world. As quantum computers become more powerful and accessible, they have the potential to break many of the cryptographic algorithms that currently secure our sensitive data, financial transactions, and critical infrastructure. This looming “quantum threat” has far-reaching implications for individuals, organizations, and nation-states, as it could lead to widespread data breaches, economic disruption, and compromised national security. Despite the growing recognition of this risk, existing legal and regulatory frameworks are largely unprepared to address the unique challenges of quantum-enabled cyber threats. Moreover, the geopolitical implications of the quantum revolution are complex and multifaceted, with the potential to reshape the global balance of power and exacerbate technological inequalities. To mitigate these risks and promote quantum readiness, there is an urgent need for the international community to develop new legal frameworks and cooperative mechanisms that span technical, economic, legal, and political domains. This article provides an interdisciplinary analysis of the quantum threat to cybersecurity, examines its potential impacts across various sectors and international relations, and offers policy recommendations for developing a comprehensive global governance framework. By proactively addressing this challenge through multi-stakeholder collaboration and quantum-resistant solutions, we can work towards a more secure and resilient digital future in the face of this transformative technology. "