You will probably see a headline picked up from the Telegraph warning of how hackers can use the in-flight entertainment systems to cause planes to crash; please ignore it.  Pilots do not generally log into a secret part of the interface on your setback screen to control the airplane, they have a separate system which is not about to be overridden by someone screwing with that system.  On the other hand they could force everyone to watch a Rob Schneider movie, which might be worse.  The Inquirer also suggests playing with cabin lighting or broadcasting fake announcements, as annoying as the teenager chatting away on the phone next to you or the child screaming in the background.  There were some reasonable suggestions in the article, which you can see here.

"LADIES AND GENTLEMEN, THIS IS YOUR PILOT SPEAKING. It turns out that hackers may be able to fiddle with the in-flight entertainment system on board and take control of the plane."

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