A "hijacker" is a person who forcefully takes control of something that doesn't belong to them, such as a vehicle, airplane, or website, often for harmful or illegal purposes. Full definition
They existed only to take over his browsing experience; each appears on a list of browser hijackers on Wikipedia. (pcmag.com)
Everywhere, it was a known story that Nigeria's main source of revenue was more under the control of hijackers who also went ahead to «kill» the price of crude at the international market. (nigeriapoliticsonline.com)
The film focuses alternately on the tensions in the Israeli government over how to deal with the crisis, and the conflict between the two German hijackers who start to question their commitment to a cause they have no real stake in. (screenjabber.com)