There is WiFi connectivity at the time was on the plane are indeed provide comfort for the passengers. But don't get me wrong, this one facility could also be bad, even planes can be easily hijacked by a hacker. This was disclosed by the Federal Aviation Administration (FAA) of the United States.
The FAA warned that some aircraft models have WiFi security systems that are less good. In fact they have been reminded of the risks the danger of Boeing on several types of aircraft. The intended aircraft is the Boeing 787 Dreamlinder and Airbus A350 and A380.
A passenger plane on a WiFi network is still one network with avionics on board. It was very risky, in which a hacker could easily infiltrate the system and then even can also take over the aircraft navigation systems.
To do the hijacking activity, a hacker must first pass through a firewall telebih that separates between the WiFi network with aircraft avionics systems. And it is considered to have been quite as preventative measures. However, the more IT security experts recommend that both networks were created separately.