Hi-Jack (also commonly spelled hijack) is a verb that refers to the act of illegally seizing control of a vehicle, typically an aircraft, ship, or truck, while it is in transit. The term can also be applied more broadly to the act of seizing control of goods, or figuratively, to take over or divert something, such as a meeting, a conversation, or a process, for one's own purposes.
Etymology
The exact origin of the term "hijack" is debated, but it is generally believed to have emerged in the United States in the early 20th century, particularly during the Prohibition era (1920-1933). One popular theory suggests it derived from highway robbers calling out "Hi, Jack!" to their victims, possibly as a warning or a greeting before seizing their goods. Another theory relates it to the practice of stealing from trucks, with "high" referring to the elevated nature of truck trailers.
Usage and Context
The term "hijack" is most frequently associated with the forcible takeover of:
- Aircraft: Known as air piracy or aircraft hijacking, this involves seizing control of an airplane, often with the intent to divert its course, take hostages, or use it as a weapon. This is a serious international crime.
- Vehicles: Terms like "carjacking" (forcibly taking a car from its driver) and "truckjacking" (taking a truck, often for its cargo) are specific forms of hijacking.
- Ships: Also known as piracy, this involves seizing control of a vessel at sea, often for ransom or to steal cargo.
Beyond physical vehicles, "hijack" is used metaphorically:
- Meetings or Events: To "hijack a meeting" means to take control of the agenda or discussion, diverting it from its original purpose to one's own.
- Conversations: To "hijack a conversation" means to dominate it or change its topic to suit one's own interests.
- Processes or Systems: In a broader sense, it can refer to illegally gaining control of a computer system or a political process.
Legal Implications
Hijacking, particularly of aircraft or ships, is a grave criminal offense with severe penalties under national and international law. It is often linked to terrorism, organized crime, or extortion. International treaties, such as the Hague Convention for the Suppression of Unlawful Seizure of Aircraft (1970) and the Montreal Convention for the Suppression of Unlawful Acts Against the Safety of Civil Aviation (1971), aim to ensure that perpetrators are prosecuted or extradited.