A jet engine is a propulsion system that creates thrust by compressing air, mixing it with fuel, burning the mixture, and expelling hot exhaust at high speed. The reaction force pushes the aircraft forward. Jet engines are used in aircraft, missiles, and test rigs, and they depend on precise control of airflow, fuel flow, temperature, and rotating speed.
In cyber security, jet engines matter because they are controlled by embedded electronics, sensors, and software such as engine control units. Attackers may target maintenance tools, firmware updates, telemetry links, or ground systems to inject false data, change settings, or disrupt safe operation. Defenders protect these systems with signed updates, access control, secure diagnostics, and monitoring that can detect tampering or abnormal engine behavior.