Abstract
Internet of Things (IoT) represents the future of technology where objects will be able to communicate with each other and connect to the internet to create self-configuration, intelligent system. Beside IoT development benefits, there is still great doubt about security and privacy which are considered major challenges facing the adaption and development of IoT architecture. Security and privacy issues are the most critical challenge that needs to be addressed in each IoT layer and it is not fully addressed yet. There have been many studies propose solutions to address security issues. Protecting IoT require appropriate security framework that covers all IoT layer-security issues. This paper presents a review of security and privacy issues and challenges in IoT. It also shed a light on security requirements relevant to IoT environment and some proposed solutions.