The Security Issues and Challenges in Blockchain Technology: A Survey

Blockchain Technology

Abstract

Blockchain technology offers a massive network with built-in security features that encompass cryptography, decentralization, and consensus, which foster trust in transactions. IOT futher look as emerger in finance and security that are the application of blockchain. Basic needs for every blockchain consumer is the first prioritize that data confidentiality, integrity, and availability. In the era of 2025 trust is the nessarry part for security for third parties, which handle the privileges as private and public.  The mentioned ad- vantages and disadvantages motivated us to provide an advancement and comprehensive study regarding the applicability of blockchain technology. This paper focuses on the bloackchain security issues for blockchain and sorts out the security risks in six layers of blockchain technology by com- paring and analyzing existing security measures. The text also investigates and describes various security threats and obstacles associated with the implementation of blockchain technology, fostering theoretical inquiry and the creation of strong security protocols in both current and forthcoming distributed work settings.