Changing the instructions or code that tells a computer or device what to do; rewriting software or resetting instructions.
From re- (again) + programming (from program, Greek programma = a public notice written beforehand). The 're-' prefix shows the action is happening a second time or in a new way.
When hackers reprogram devices, they're essentially rewriting the device's 'brain'—which is why cybersecurity is so critical, because reprogramming a car's computer or a medical device could be dangerous in ways old-fashioned vandalism never was.
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