Almost all the Internet of Things (IoT) devices in the current day scenario interact with other devices to exchange information and take action. It is highly essential to know about the wireless protocols that are used by IoT devices and the security issues affecting them, in order to pen test IoT devices effectively.
Wireless communication or radio simply is a way of transferring data from the source to destination through the communication medium of air using electromagnetic waves. The radio signals are the same signals that are used in your common devices such as microwave, light, and infra-red; it's just that the signal in each case varies in wavelength and frequency. In case of wireless communication, the data that needs to be transmitted is first converted into an electric signal using the potential difference and the location of the antenna from which the signal originates, carried across by a carrier wave, and then demodulated at the other end to obtain the actual data...