**2.2 Keeping high privacy and security of all connected devices**

The main idea of using the Internet of Things is to have a smart system and to connect billions of devices over the whole world. The expected devices to be connected together are expected to be 50 billion through the Internet of Things devices by 2020. **Figure 1** shows the growth of the world population and the connected devices by 2020. Connecting such a huge number of devices required high-security

levels to prevent scams and to allow high level of data protection. As a result, achieving high level of security is a big challenge to get the needed trust from both industries and individuals to share their data utilizing the Internet of Things.
