Blockchain for Cybersecurity: Architectures and Challenges

Abstract

Blockchain technology is a sophisticated database technique that facilitates the transparent exchange of information among a network of businesses. The blockchain database is designed to store data by organizing it into blocks that are interconnected in a chain-like structure. A blockchain may be defined as a cryptographic and digitally recorded register or list that securely stores data. In the context of blockchain technology, data is kept in a series of interconnected blocks arranged sequentially, like a chain. Each block has a timestamp identifying the moment of recording, along with the data that is to be registered in the registry. The data is documented in a manner that ensures accessibility and verifiability for all individuals, with the ability for anyone to get a duplicate of the register. The use of blockchain technology guarantees the transparent and safe storage of documents, eliminating the need for a centralized authority. This report provides a comprehensive analysis of the blockchain architecture. This study focuses on the analysis of the security mechanisms used in the blockchain system, with particular emphasis on the comparative evaluation of the four primary blockchain designs. The study focused on the analysis of blockchain applications concerning their implications for cybersecurity and then identified and evaluated their advantages and constraints. Furthermore, a comprehensive analysis has been conducted on the primary cybersecurity dangers that may arise inside these apps. © 2025 selection and editorial matter, Ghulam Yasin, Amit Kumar Tyagi and Tuan Anh Nguyen; individual chapters, the contributors.