Social engineering toolkit (SET), as it is popularly known, is a menu driven tool in Kali 2.0 used to build different client-side tricks. In Kali Linux version 6.5 is installed. It includes various social engineering attack options that can be deployed from the same interface. It is written in Python and the menu-driven functionality makes it easier to build the attack. The social engineering toolkit helps to execute a complex attack with less efforts and time and also allows us to test various social engineering scenarios in a practical way. It was previously impossible to execute these in a timely manner.

The social engineering toolkit can be found in Kali Linux 2.0 at Applications | Exploitation tools. Once the terminal window is up, you will be presented with the menu shown in the following screenshot. The prompt at the terminal displays set and it waits for your input:

The initial screen presents six options. The Social-Engineering Attacks option is the one...