Civil aviation is always the silver bullet target of the terrorist due to countless favorable reasons for them. The World Trade Center attack on September 11, 2001, was an eye-opener, especially for law enforcement agencies across the world, forcing them to implement stringent security and offensive measures. Consequent upon the increased deterrence, eroded the probability of a conventional terrorist attack, and therefore, the terrorist organizations are being compelled to seek innovative ways to plan an attack. This led to the origin of an alternative form of attack, executed from the far distance of the target or the so-called drone or pilotless aircraft. This paper provides valuable insights into the drones, its classification, and how it becomes a threat to civil aviation and its advantages over conventional terrorist attack methods. Keywords: Civil Aviation, Drone, Emerging Threat, Advantages, Identification, Regulation etc.