[procrastinatus]

Differential privacy seems like a pretty good approach to this problem. https://machinelearning.apple.com/2017/12/06/learning-with-p...

[twic]

K-anonymity is the other thing i've come across:

https://www.privitar.com/listing/k-anonymity-an-introduction

[awesomepantsm]

Differential privacy is basically a buzzword. Don't believe the hype.

[kahnjw]

It seems to me that diffpriv is a nascent area of research that has not yet been bastardized by the business community. The complete opposite of a buzzword.