Highjack
noun
An instance of hijacking; the illegal seizure of a vehicle; a hijacking.
An instance of a seizure and redirection of a process.
An amendment which deletes the contents of a bill and inserts entirely new provisions.
verb
To forcibly stop and seize control of some vehicle in order to rob it or to reach a destination (especially an airplane, truck or a boat).
To seize control of some process or resource to achieve a purpose other than its originally intended one.
To seize control of a networked computer by means of infecting it with a worm or other malware, thereby turning it into a zombie.