1. Shen, G., & Liu, B. (2011). The visions, technologies, applications and security issues of Internet of Things. In 2011 International Conference on E-Business and E-Government (ICEE). IEEE.
2. Howell, J. (2017, October 24). Number of connected IoT devices will surge to 125 billion by 2030, IHS Markit says. Retrieved from IHS Markit: https://technology.ihs.com/596542/number-of-connected-iot-devices-will-surge-to-125-billion-by-2030-ihs-markit-says.
3. Nordrum, A. (2016, August 18). Popular Internet of Things forecast of 50 billion devices by 2020 is outdated. Retrieved from IEEE Spectrum: https://spectrum.ieee.org/tech-talk/telecom/internet/popular-internet-of-things-forecast-of-50-billion-devices-by-2020-is-outdated.
4. Fruhlinger, J. (2018, March 9). The Mirai botnet explained: How teen scammers and CCTV cameras almost brought down the internet. Retrieved from CSO. https://www.csoonline.com/article/3258748/security/the-mirai-botnet-explained-how-teen-scammers-and-cctv-cameras-almost-brought-down-the-internet.html.
5. Goodin, D. (2017, October 28). Assessing the threat, the Reaper botnet poses to the Internet—What we know now. Retrieved from ArsTechnica. https://arstechnica.com/information-technology/2017/10/assessing-the-threat-the-reaper-botnet-poses-to-the-internet-what-we-know-now/.