We haven't scoped out the security features. Cell level security can be difficult to implement efficiently, but if we see enough demand for it, I could imagine it happening.

My guess is that the first pass will be table and column level authorization, plus of course strong authentication. Row/cell/predicate-based security could be added in a later release, but it's a feature that's less commonly required.

As for encryption at rest, I imagine that will also be fairly high priority as we move towards GA or the first few releases after GA. But again, we haven't done the scoping exercise yet, so I'm cautious to throw out dates :)

If you're interested in helping to contribute either feature, let us know! kudu-dev@googlegroups.com