The Internet of Things comprises a large proportion of cyber-physical system where a group of interconnected sensors and actuators usually with cloud backends are used to perform a task. Vendors of the Internet of Things devices provide programming frameworks to help users—usually with little knowledge of embedded or distributed systems—to develop their applications. Most these frameworks provide an event-based abstraction of the cyber-physical system. In this paper, we propose a preliminary set of faults for fault injection in event- based the Internet of Things as a part of part of our ongoing investigation of testing of the Internet of Things applications. These faults intend designed to enhance the awareness of the programmers about the situations that might arise in such systems.