Securing Distributed IoT Systems: Blockchain-Based Protocol with Integrated Intrusion Response

Abstract

Incorporating BC technology in Internet of Things (IoT) networks allows secure peer-to-peer communication in Distributed Information Systems (DIS). This research analyzes the protocols implemented on the Blockchain (BC) about data integrity, authentication, and trust issues, which are core challenges of IoT. Thus, the study discussed a secure communication protocol based on BC. These protocols incorporate consensus and smart contracts, which remove central points of failure and improve transparency. Thus, the study setup simulates various IoT devices sending classified messages through a FastAPI backend integrated with Ethereum (Geth) via web3.py. The recent designs and blueprints show where they shine and where overhead or speed still bite. We aim to steer future work toward light, expandable, and privacy-first tools that lock down open IoT systems.