Blockchain Security Using Confidentiality, Integrity, and Availability for Secure Communication

Network Security in blockchain Technology provides transparency, decentralization of user records during transactions, and immutability through consensus. However, integrating Confidentiality, Integrity and Availability (CIA) in blockchain Technology in Network Security environment cannot be over emphasized due to vulnerabilities on blockchain network nodes, and the security challenges including Private Key theft, Sybil attacks, Smart Contract exploits, 51% attacks and spear phishing attack that has led to data theft, data manipulation and breaches, financial losses and distrust. The paper explores network security issues and vulnerabilities in blockchain technology, focusing on the CIA to improve security. The contribution of the paper is threefold. First, it explores the various blockchain vulnerabilities and exploits during transactions. Secondly, it develops a blockchain system called MasterChain in a virtual environment as a testbed. An attack on the MasterChain blockchain system will then be orchestrated to exploit vulnerabilities. Finally, it models the system to conform to the CIA Triad and recommends control mechanisms to improve security. The results show that the CIA triad can be used to prevent possible Blockchain attacks during the exploitation of blockchain vulnerabilities.