Sponsor Q


September 2013 - August 2018


Notes from 2014 Dev Meeting

measure relay level stats

  • bandwidth/ewma on circuits, or connections, exit connections
  • num circuits exiting Tor
  • num hidden service rendezvous
  • fraction of circs that are hidden service circs over last 24 hours

measure user statistics/model

  • how many are online (countMe)
  • how often online and how often they stay away (churn)


  • aggregate
  • better to not store stats in RAM for a long time
  • differential privacy -> add noise so that at any point, it is safe (in RAM or not)
  • anything collected about clients needs to be clear why it benefits clients
  • collaborative client/guard scheme
  • separate processes? simpler implementation with ec already in Tor

there is a large gap between what makes an acceptable (interesting to researchers) diffpriv system and what should be implemented and maintained in Tor. how do we bridge the gap?

Last modified 12 months ago Last modified on Oct 11, 2017, 7:34:27 PM