Internet of things describes the network of physical objects—a.k.a. "things"—that are embedded with sensors, software, and other technologies to connect and exchange data with other devices and systems over the Internet. (Wikipedia). According to the World Economic Forum's State of the Connected World report, it is predicted that by 2025, 41.6 billion devices will be capturing data on how we live, work, move through our cities, and operate and maintain the machines on which we depend. The applications of IoT cover broad areas including manufacturing or the industrial sector, health sector, agriculture, smart cities, security, and emergencies among many others. Adopting a multi-layer security-by-design approach to IoT development is critical for handling computers, files, web, and cloud-based IoT applications and services, as well as coping with threats and issues as they occur (Afzal, Saira, et.al, 2021). They highlighted IoT Security Issues for example IoT securit...