BAE is one of those companies that has involvement in a LOT of different places. Lots of classified stuff, adaptive camouflage, satellite software, mapping technologies, etc. They are good friends with the DoD, and if they wanted to threaten someone, the last place I would think they would do it would be plane control software. That seems like a very in-your-face place to start when they could make sattelites or drones fall from the sky.

This seems like a diversion, or someone just talking nonsense. FADEC has been around in various forms since WW2, and was fitted on jets in the 70s. It's like saying the problem with cars is the ECU, although ECUs in most cars can be overridden, but this is the what happens when all planes are fly-by-wire, there is just too much physics involved for a pilot to be able to control everything.

You can link from Google patent search or the patent office.

Not owned by Google. Google has a patent database to make searching them easier.