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English definition of “hack”

hack

verb [I or T]     /hæk/
IT to use a computer to illegally access information stored on another computer system or to spread a computer virus : hack into sth Two employees were charged with hacking into the company's computer system and changing data . Studies have revealed that it's fairly easy to hack an electronic voting system .
(Definition of hack verb from the Cambridge Business English Dictionary © Cambridge University Press)
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