Next time you walk by a parked Tesla and its sunroof is opening and closing with nobody sitting inside or around it, you could be witnessing a hacker moment. For all of its strengths as a car, the Model S reportedly has a weak spot: the security of its API (application programming interface) authentication, according to an article in the O'Reilly Community by George Reese, executive director of cloud management at Dell.
Tesla develops and uses its own API authentication protocols, which have made access to certain Model S functions too easy for hackers, Reese says - himself a Model S owner.

The link for this article located at autoblog is no longer available.