BLOCKCHAIN TECHNOLOGY AND ITS ROLE IN CYBERSECURITY

Abstract

The rapid growth of digital technologies has significantly changed the modern world. Today, financial systems, healthcare infrastructures, industrial environments, cloud platforms, and Internet of Things (IoT) devices depend heavily on digital communication and data exchange. However, together with these technological developments, cybersecurity threats have also increased dramatically. Traditional centralized security systems often fail to provide sufficient protection against data breaches, unauthorized access, identity theft, and cyberattacks. In this situation, blockchain technology has emerged as one of the most promising solutions for improving cybersecurity.

Blockchain is a decentralized digital ledger technology that allows information to be stored securely, transparently, and permanently without relying on a central authority. By using cryptographic algorithms, distributed consensus mechanisms, and interconnected blocks, blockchain ensures data integrity and prevents unauthorized modifications. This paper discusses the fundamental concepts of blockchain technology and analyzes its applications in cybersecurity. In particular, the study focuses on authentication systems, access control, data integrity, smart contracts, and the integration of blockchain with IoT and cloud computing environments. The paper also highlights the advantages and limitations of blockchain-based security systems and explains why blockchain is becoming an important foundation for future cybersecurity infrastructures.