The person who knows and also has the skill to hack into any kind of electronic device by hacking past or breaking through its firewall is known to be a hacker. These hackers can either be good, which means very skilled, or some might have just started hacking, and they don't have that much knowledge about the different things that they can do to hack into any device very easily. You can also look in the market and see hackers for hire, where you can pay the hacker to hack into anything you like.