Why not restrict your talk of foreign investments, personal dalliances, union politics and the like to times when you aren't in the cockpit or otherwise in front of a mike?
Is that so difficult?
To compensate for the appalling loss of privacy involved (ahem ..), IIWY I'd insist that all airlines provide a guaranteed unbugged, soundproof space for their staff to chat in.
hehehehehehehe
[OK, now I'm just playing with y'all....
]
RIX: some sensible suggestions IMO, and clearly access to the data should be very rigorously controlled.