A Survey on IOTA Based Technology for Enhanced IoT Security

The Internet of Things (IoT) has revolutionized industries and daily life by connecting devices, sensors, and systems to autonomously collect, process, and share data. While offering immense possibilities, the distributed nature of IoT networks introduces significant security challenges. Conventional security measures struggle to address IoT's unique needs, and blockchain solutions face limitations. IOTA presents the Tangle, a novel Distributed Ledger Technology (DLT) tailored for IoT applications, offering feeless transactions, scalability, and decentralized consensus. This survey explores IOTA-based security solutions, focusing on access control, authentication, data integrity, confidentiality, threat modeling, risk assessment, performance, and scalability in IoT environments. Through a comprehensive review of literature, we highlight the efficacy of IOTA in enhancing IoT security. We identify future research directions, including interoperability, integration with emerging technologies, real-world deployments, and advanced trust management, to further strengthen IoT security using IOTA technology.