I. Introduction
The Internet of Things is becoming a need of the modern world. The trend of Internet-enabled devices is increasing with the increase of automated solutions available in the market. However, one of the major issues faced by the Internet-connected devices is their security. There are some serious concerns among users regarding the security of IoT devices. Recent attacks on various smart devices exacerbated that situation and discouraged users from using these intelligent devices. According to Consumers International and internet survey [1] about 63% of the people from different countries like the USA, UK, Canada, Australia, Japan, and France think that connected devices collect private data and the behavior of devices is creepy. While survey data from Economist Intelligence unit (EIU) [2] shows that about 74% of the consumers worry about losing their civil rights. This gap between people's privacy expectations and the posture of IoT security needs to be to achieve full swing in terms of growth. It is a well established fact that such concerns could be addressed by a systematic security evaluation of IoT systems and performing threat modeling prior to the development and deployment of these systems.