6. Intrusion Detection System with Layered Approach to Internet of Things—A Business Paradigm

A network formed by smart objects consisting of multiple physical objects, sensors, edge devices, and communicating using different types of Internet resources employed for various applications in a wide range of fields such as automobiles, health care, garment, education, and logistics is referred to as Internet of Things (IoT). It is one of the most important technological revolutions in the current time. Moreover, with the popularity of Industry 4.0, there is a huge rise in IoT applications that are being deployed and in turn it has led to the need of innovative business models. IoT provides the base for a new business model which uses physical things and the Internet. It is expected that multi-billion of physical things will be linked to the Internet by the year 2022. Also, these physical objects are heterogeneous in nature, have different protocols and architectures, lack interoperability, and as more things get connected to other things and people, security becomes an increasingly important issue. If one thing gets hacked, the connectivity gets compromised and hence the other devices connected to it becomes vulnerable and the complete system gets exposed to security threats. The huge heterogeneous landscape of these objects makes it quite difficult to design the appropriate security measures. Therefore, in addition to traditional security techniques, other security tools particular to IoT domain are needed. For this, Intrusion Detection System (IDS) are used to fulfill the aim. In this chapter, we present an overview on the use of IDS in IoT. We focus on the current state of IoT by doing extensive literature survey, identifying current architectures, and presenting some security challenges and the possible solutions.