Cyber Times International Journal of Technology & Management

The word IoT (Internet of Things) has become popular in research areas of researcher & academicians. The world is going through a transition phase i.e. from Internet to IoT where not only people are getting connected but also different devices that are able to communicate can connect to other devices through internet. In short there will be a world of communicating “things”. The IoT paradigm consists of smart objects, actuators and sensors that generates the large data & transmit through internet. The heterogeneous nature of IoT paradigm calls many challenges involved in it. This paper starts with introduction of IoT paradigm, some IoT concepts and its typical structure and finally reviews of IoT security models that have been developed to address security issues in IoT.