protonmail people working with some of the alt-coins there is some work with privacy preserving databases, and privacy preserving data mining/machine learning

protonmail people working with some of the alt-coins there is some work with privacy preserving databases, and privacy preserving data mining/machine learning at the academic level and places like Microsoft Research. homomorphic encryption research is presently led by IBM. There are also DARPA's safeware project with Galois and like minded groups for obfuscating compilers