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Researchers have discovered it's quite easy to hack pacemakers. Modern pacemakers are able to communicate wirelessly. There is no form of encryption used for the communication. This gives hackers the ability to steal private information stored in the pacemaker or, even worse, shutdown the pacemaker or reprogram it to make it give a deadly electric shock to its wearer.

It's often said: security is a state of mind. Computers and electronics are more and more used to make life easier, but it's often forgotten to prevent bad people from abusing these computers and electronics. I'm sure many people will ask "who would have expected that hackers want to hack a pacemaker?". The answer is probably: "no one". And that's exactly why hackers will do it.