Your example suggests a trend - there's much more information hidden in data that it seems on a surface. Many people don't understand it, or don't want to accept it. But it's the nature of the world, and I see no way around it except banning all computation. Because our natural capabilities aided by data-crunching machines are enough to make those "massive privacy violations".

So if we want to live with computing, I think we need to learn to live with capabilities of computing and the nature of the casual structure of the physical universe.