<p>The diverse applications of IoT are achieved by a set of complex inter-related networks of things and communications. IoT applications are also concerned about an array of devices such as sensors, mobile devices, personal computers, the smart systems such as Alexa, Eco, etc, besides the whole range of communication network binding them together in a seamless manner. This book explores the variegated perspectives of security in the complex context of Internet of Things.</p><p>It also aims to present the changing face of security, from the ubiquitous networks comprising of WSN as the lowest layer, to the enabler apps working as bridge between the users and the complex IoT system. It takes a closer look at the different types of security schemes required to fit in the heterogeneous nature of IoT network., whilst the readers are also introduced to basic attacks targeting an IoT network, as well as specific types of security schemes worked out by researcher