Found this on Wiki for 787

"In January 2008, previous Federal Aviation Administration concerns came to light regarding protection of the 787's networks from possible intentional or unintentional passenger access.[119][120] The computer network in the passenger compartment, designed to give passengers in-flight internet access, is connected to the airplane's control, navigation and communication systems.[119]

Boeing says various hardware and software solutions are employed to protect the airplane systems including air gaps for the physical separation of the networks, and firewalls for their software separation. Measures are provided so data cannot be transferred from the passenger internet system to the maintenance or navigation systems. As part of certification Boeing plans to demonstrate to the FAA that these provisions are acceptable"

Uhm.... as a computer network administrator for 20+ years, I can tell you if you give me enough time (which on a long haul flight shouldn't be a problem) I can hack into the 787 control, navigation, and communication systems.

What the hack is Boeing thinking? Did they not hire any computer security expert to double check their work? I wouldn't even wire my house this way.