International Science Community Association Research Journal of Engineering Sciences 2278-9472 11 2 2022 05 26 IoT: Major challenges, threats and concerns 30 32 EN Mishra Shubhika 1 Bhilai Institute of Technology Durg, CG, India Sharma Ritika 2 Bhilai Institute of Technology Durg, CG, India Kiran N. Devaki Sai 3 Bhilai Institute of Technology Durg, CG, India Prabhat V.Venkat 4 Bhilai Institute of Technology Durg, CG, India Pandit Anuj Kumar 5 Bhilai Institute of Technology Durg, CG, India Sharma Mousam 6 Bhilai Institute of Technology Durg, CG, India Agrawal Tejas 1 Electrical Engineering, BIT- Durg, C.G., India Ganvir Pranshul 2 Electrical Engineering, BIT- Durg, C.G., India Sahu Dharini 3 Electrical Engineering, BIT- Durg, C.G., India Kumar Alok 4 Electrical Engineering, BIT- Durg, C.G., India Tiwari Rashmi 1 BIT, Durg, Chhattisgarh, India Sharma Mousam 2 BIT, Durg, Chhattisgarh, India Chandrakar Mukesh Ku 3 BIT, Durg, Chhattisgarh, India Dewangan Deepika 1 BIT, Durg, Chhattisgarh, India Bhusnur Surekha 2 BIT, Durg, Chhattisgarh, India Mishra Alka 3 BIT, Durg, Chhattisgarh, India Kaushik Shraddha 1 Bhilai Institute of Technology, Durg, India Dhale Nitesh Kumar 2 Bhilai Institute of Technology, Durg, India Shrivastava Mitesh 3 Bhilai Institute of Technology, Durg, India Rathore Harsh 4 Bhilai Institute of Technology, Durg, India Deshmukh Saurav 1 Department of Electrical Engineering, Bhilai Institute of Technology, Durg, CG, India Singh Pavan 2 Department of Electrical Engineering, Bhilai Institute of Technology, Durg, CG, India Maurya Ankush 3 Department of Electrical Engineering, Bhilai Institute of Technology, Durg, CG, India Parteti Sanjana 4 Department of Electrical Engineering, Bhilai Institute of Technology, Durg, CG, India Tiwari Shashank 5 Department of Electrical Engineering, Bhilai Institute of Technology, Durg, CG, India Sando Manpreet 1 Department of Electronics and Telecommunication Engineering, Bhilai Institute of Technology, Bhilai House, Durg 491001, India Kashyap Tanuja 2 Department of Electronics and Telecommunication Engineering, Bhilai Institute of Technology, Bhilai House, Durg 491001, India > Short Review Paper 2021 9 3 2022 05 26 With various benefits offered, Internet of Things (IoT) is surely going to be one of the widely used technologies to transform lives with its social, economic and technical significance. Major tech giants are already working on it as their core business focus. All in all, it is seen a powerful way that can change the very essence of our living, for the better. But, with great expectations and potential, we absolutely cannot overlook the challenges, concerns and threats, this technology brings with itself. In lieu of providing us with customised suggestions and services, it would leave us susceptible to security concerns like identification and profiling, localisation, as an outcome of blurred public-private borderline, life attacks due to owner identification and tracking. Instead of total automation of these devices leading to mechanical decision making and possible loss of control, a human-machine approach would go a longer way. This paper highlights the current concerns to develop reliable, secure and energy-efficient IoT systems. Copyright@ International Science Community Association