1. Gartner says 8.4 billion connected “things” will be in use in 2017, up 31 percent from 2016;Gartner;Gart Inc,2016
2. Iot developer survey;Skerrett,2017
3. Iot security: ongoing challenges and research opportunities;Zhang,2014
4. Hardware is the foundation of iot security;Hanna,2016
5. Security and privacy in smart city applications: challenges and solutions;Zhang;IEEE Commun Mag,2017