Blockchain-Enabled Zero-Trust Cybersecurity Models: A Survey of Approaches and Trends

Abstract

The rise of digital ecosystems, multi-cloud architectures, and interconnected devices has fundamentally reshaped the cybersecurity landscape. Traditional perimeter-based models that once formed the backbone of enterprise security are now inadequate to counter advanced persistent threats, insider attacks, and increasingly sophisticated adversaries. To address these challenges, the Zero-Trust Security (ZTS) paradigm has emerged as a transformative approach based on the principles of “never trust, always verify.” Simultaneously, blockchain technology, with its decentralized, immutable, and transparent features, has shown remarkable promise in reinforcing cybersecurity frameworks. This survey paper explores the convergence of blockchain and zero-trust security models, analysing their synergies, applications, limitations, and emerging trends. By conducting a review of academic literature, industry white papers, and recent case studies, the study identifies how blockchain can enhance zero-trust mechanisms through distributed identity management, tamper-proof logging, decentralized access control, and secure threat intelligence sharing. Application domains examined include cloud computing, Internet of Things (IoT), critical infrastructure, and enterprise IT systems.

The analysis reveals that blockchain-enabled zero-trust models significantly strengthen resilience against cyberattacks by decentralizing trust, eliminating single points of failure, and providing verifiable audit trails. However, challenges such as blockchain scalability, interoperability, energy consumption, and regulatory concerns limit widespread adoption. Future directions include the integration of lightweight consensus mechanisms, AI-driven threat detection, and blockchain–edge computing convergence. By surveying state-of-the-art approaches, this paper contributes to a comprehensive understanding of how blockchain can operationalize zero-trust principles in practice. The findings underscore that blockchain-enabled zero-trust cybersecurity models represent a promising frontier for securing digital systems in an era where trust is both scarce and fragile.