Did think this was unlikely when I read the story in the Telegraph (yes yes, I read the Torygraph - I go there for the Matt and Alex cartoons, honestly). From the article there would seem to be no evidence of a hack, just his suspicions that you can get 'co-ordinates' from a skype chat.
Probably a mix of triangulated cell phone, satellite imagery and maybe a snitch on the ground to help them properly target the operating theatre :(