Originally Posted by
SpannerSpinner
Indeed, basic security. I would also expect to find the IFE system is totally divorced from the avionics package, or the interface is so basic that it's not hackable, so no, you can't plug your iPad into the IFE system and upload a virus. Real life is not a Roland Emmerich movie

Also correct. IFE isn't a part of, say, the FMS or EICAS. The closest they get is that they (occasionally) share a power supply (GenX, APU, GPU, etc). However I be willing to bet the IFE does NOT work on battery or ADG power (i.e. emergency sources).