Once he was into the airplane’s computer, he was able to manipulate the steering of a Boeing jet while the aircraft was in “autopilot” mode. The only countermeasure available to pilots, if they even realized they were being hacked, would be to turn off autopilot. Yet many planes no longer have old analog instruments for manual flying. Teso said he could take control of most all airplane systems; he could even cause the plane to crash by setting it on a collision course with another plane. He could also give the passengers a serious adrenaline rush by making the oxygen masks drop down.
Talk about security hole in need of a SERIOUS patch.