The US Federal Bureau of Investigation (FBI) has issued a formal alert telling airlines to be on the lookout for hackers.
It follows an onboard tweet from security expert Chris Roberts, who joked about being able to hack into a United Airlines plane’s wi-fi network.
A terrorist could theoretically take over systems that fly a plane by compromising equipment at their seat.
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United Airlines has now banned Mr Roberts from all its flights.
The FBI and the US Transportation Security Administration (TSA) said they had no information to support claims a plane’s navigation system could be interfered via its onboard wi-fi kit, but added that they were evaluating the evidence.
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