[tor-relays] Current state of HSDir attacks on hidden services

[Jonathan D. Proulx]

Thanks Roger,

That helped a lot. The big piece I was missing was that
hiddenservices are on v3 now (clearly I've not been paying attention
here).

And I misunderstood HSDirs thinking they were in the data path not
just the look up so could collude on traffic timing.  I guess lookups
are part of that signal but this is more analogus to DNS leaks or
poisoning than it is to a malicious exit that manages to capture all
traffic (or predictable fraction) to a particular destination.

Thanks,
-Jon