LOL! Thanks, but I'm Android developer with electrical engineering degree, so I know a bit better all of the potential threats. Yes it is possible. But you have to install a malicious app with a backdoor on your phone first, or have a hidden smartphone installed in the car. I trust Torque and always closely monitoring what I'm installing. A remote BT connection hack on the go is near to impossible, the hacker must follow me very close for quite a long period of time to be able connect to my very low range OBD dongle and stay connected long enough to communicate with the computer. In most of the cases I'm occupying that connection with Torque already when riding, so hacker's chances to connect are close to a zero. There is no way to connect to my car when parked, as OBD port has no power without the key in the ignition. Also my Subaru Forester 2002 on-board computer provides way too little for a hacker to play with, so I doubt anyone would be interested even in pranking me - too boring

On other hand, if anyone have a serious intent to hack a car - he/she can do that with anyone's car, regardless of any wireless OBD installed or phone apps used by the owner.