Cyber Chain – Merging Blockchain with Cyber Security

The new digital economy is plagued by profound flaws because it relies on centralised systems with a single control point that are attractive and easy targets for cyber attackers. This study examines how Blockchain Technology can remedy these inherent security vulnerabilities. Blockchain is powerful due to three central properties: decentralisation, data dispersed among numerous computers, cryptographic linking applying maths codes to protect data, and immutability, data records that cannot be altered.This paper discusses how BT develops Self-Sovereign Identity SSI systems, providing individuals with complete control of their digital IDs and preventing mass identity theft. It further discusses its applications in securing IoT devices and verifying the integrity and authenticity of essential information. Key findings distilled from existing literature affirm the technology's potential but outline principal stumbling blocks, such as the problem of scalability, system velocity and legal disputes with data privacy legislation, such as the right to be forgotten. The research concludes that concentrated development on standardised enterprise solutions will render blockchain a critical, new layer of contemporary cyber security protection.