[ianmiers]

So there definitely are other attack options that Zcash on its own does not protect against and in some cases cannot. The biggest being timing. Usage patterns fall seem to fall into that.

But do you think the fact that 1/5th of transactions are shielded actually enables more attacks on shielded TXs?

[kobeya]

Yes because 4/5 of the transactions are revealing a LOT more than they otherwise would, thereby greatly increasing the signal to noise of other analysis techniques.