U.S. and U.K. spy agencies have intercepted in-flight phone calls for years

U.S. and U.K. spy agencies have been monitoring in-flight mobile phone users for years, according to new revelations from the trove of documents leaked by former NSA contractor Edward Snowden.

As early as 2012, the U.K. Government Communications Headquarters (GCHQ) was intercepting voice and data communications from commercial aircraft using the OnAir service to carry 2G mobile services over the Inmarsat satellite communications network. At the time, the GCHQ did not have access to a rival in-flight mobile service provider, Aeromobile, the French newspaper Le Monde reported Wednesday.

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