Blockchain in Cybersecurity: Enhancing Trust and Resilience in the Digital Age

Abstract

Blockchain technology has emerged as a transformative tool in the field of cybersecurity, offering a decentralized, immutable, and transparent framework to enhance trust and resilience in digital systems. This review explores the various applications of blockchain in cybersecurity, focusing on its ability to mitigate key security challenges such as data tampering, unauthorized access, and identity fraud. By analyzing the integration of blockchain in areas like secure data sharing, IoT security, and identity management, this paper highlights the strengths and limitations of blockchain-based solutions. Furthermore, it examines consensus mechanisms and cryptographic techniques that ensure the integrity and confidentiality of information. Despite its potential, blockchain faces challenges such as scalability, regulatory hurdles, and susceptibility to attacks like 51% and Sybil attacks. This review aims to provide a comprehensive understanding of blockchain's role in enhancing cybersecurity, while also identifying future research directions to overcome current limitations.