That does sound creepy, what do they do after the planet is gone.

Terminator has a very basic what if AI scenario, like Ultron. To save humanity from threat it eliminates it so currently the biggest threat of then all is us, so error code of some sort. Terminator is not Terminator's Movies it's James MaFffackin Cameron. It also deals with time travel and all sorts of hard shit to write.

Cyber Terrorism is the best bet for this scenario. Also you know how life I often weirder than science fiction? Were going to be like using strands of DNA for memory storage and Graphene microchips, ferrfluid coolants and harddrives, and sicilene and carbyne transistors, it's going to be wierd.