I’m not laughing. My friend’s car messed up because some electronic code malfunction was preventing it from going into gear. It is only reasonable to think that an outside force could easily mess with the mechanics/electronics of a plane, IMO.
Planes have already been hacked and commandeered, according to the FBI. See https://www.wired.com/2015/05/feds-say-banned-researcher-commandeered-plane/
Just wait until everyone’s in self driving cars.