• Snehit Krishna Shastry G
• Prof. Naseeba
• Thanish P Shetty
• Sharath H K
• Suraj S Rao

In today's digital age, ensuring data integrity, transparency, and security has become a critical challenge across various sectors. Blockchain, a decentralized and immutable ledger technology, has emerged as a transformative solution in enhancing cybersecurity measures. This paper explores the role of blockchain in strengthening security by eliminating central points of failure, mitigating data tampering, and enabling trustless environments. Through its consensus mechanisms, cryptographic hashing, and distributed ledger capabilities, blockchain offers secure frameworks for applications in identity management, secure data sharing, IoT, financial transactions, and more. The paper also highlights real-world use cases, the advantages of adopting blockchain in security-critical systems, and discusses limitations and future research directions. By leveraging the core principles of blockchain technology, organizations can build robust, transparent, and tamper-resistant infrastructures that significantly elevate the standards of digital security.

Blockchain, Cybersecurity, Data Integrity, Decentralization, Distributed Ledger Technology (DLT), Cryptography, Smart Contracts, Identity Management, Secure Data Sharing, Tamper-Resistance.

"Blockchain In Security Enhancement", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 7, page no.445-447, July-2025, Available :http://www.jetir.org/papers/JETIRGX06082.pdf

"Blockchain In Security Enhancement", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 7, page no. pp445-447, July-2025, Available at : http://www.jetir.org/papers/JETIRGX06082.pdf