Airbus, and probably all modern aircraft, use heavily screened cables to reduce interference from external sources, but that is not a 100% guarantee. As others have said, you don't want to find out at the DH that your CatIIIB autoland is 50m off laterally. At best; a go-around and a delay, at worst...........
I remember a study in the ?80's that showed radar tracks of aircraft - and one was flying an airway in a series of 'sawtooth' steps instead of a straight line. Radio interference from a laptop, I think, was the culprit.