Abstract

The Internet of Things (IoT) is expanding rapidly, raising concerns about network security against attackers. This article explores the use of blockchain technology to enhance intrusion detection and mitigation in IoT networks. By leveraging blockchain’s decentralized and immutable ledger features, the study proposes monitoring and validating device interactions using smart contracts. Devices are assigned unique identities recorded on the blockchain, ensuring a tamper-resistant operation log. Smart contracts trigger alarms and response mechanisms upon detecting suspicious activity. A smart home scenario demonstrates the approach, where various IoT devices are interconnected on the blockchain. The network is equipped with a variety of IoT devices, ranging from smart thermostats to security cameras. Experimental results show high performance across key parameters: Identification Rate, Accuracy, False Positive Rate, True Positive Rate, False Negative Rate, and True Negative Rate, indicating the method’s efficacy in improving IoT security, ensuring device integrity, and maintaining trust in a connected world. This method shows blockchain’s potential to improve IoT security, ensuring device integrity and trust in a connected world.

Authors

V. Thiruppathy Kesavan¹, D. Danalakshmi², R.Gopi³
Dhanalakshmi Srinivasan Engineering College, India^1,3, Dhanalakshmi Srinivasan University, India²

Keywords

Internet of Things, Blockchain, Smart Contract, Immutable Ledger, Intruder