The increase of smart devices has accelerated sensitive data exchange on the Internet using most of the time unsecured channels. Since a massive use of RFID (Radio-frequency Identification) tags in the transportation and construction industries from 1980 to 1990, with the expanded use of the Internet with 2G/3G or 4G since 2000, we are witnessing a new era of connected objects. A huge number of heterogeneous sensors may collect and dispatch sensitive data from an endpoint to worldwide network on the Internet. Privacy concerns in IOT remain important issues in the research. In this paper, we aim to evaluate current research state related to privacy and security in IOT by identifying existing approaches and publications trends. Therefore, we have conducted a systematic mapping study using automated searches from selected relevant academics databases. The result of this mapping highlights research type and contribution in different facets and research activities trends in the topic of “security and privacy” in IoT edge, cloud and fog environment.