"... (except stopping the sharing entirely)..." So the only secure path seems clear. To me at least. Again, maybe this information is not as critical as info

"... (except stopping the sharing entirely)..." So the only secure path seems clear. To me at least. Again, maybe this information is not as critical as information you might be exchanging in the military. I don't know. But, to me, it seems a good example of information you don't want foreign powers being privvy to.