Once the toothpaste (data) is out of the tube (FB data center) its hard to put back (manage). An option would be to remove or hash (different nonce for every sh

Once the toothpaste (data) is out of the tube (FB data center) its hard to put back (manage). An option would be to remove or hash (different nonce for every share of data) identifying information and add noise to the various metrics gathered. That way, the results of an analysis cannot be used to target individuals. Short of some breakthrough in homomorphic encryption sharing data for analysis is problematic. Penalties can be enforced but the data is out at that point.