Measuring the Tor Network

Presented at DeepSec 2015 „DeepSec No. 9“, Nov. 20, 2015, 4:50 p.m. (50 minutes).

Tor is an anonymisation network and by design doesn't know anything about its users. However, the question about the structure of the user base often arises. Some people are just interested in the size of the network while others want details about the diversity of its users and relays. Furthermore, Tor is used as a circumvention tool. It is interesting to automatically detect censorship events and to see how the number of users changes in those countries. Tor's measurement team tries to give answer to those (and more) questions. The talk explains the collection of different data and how measurement is done inside the network. I'll talk about some of the challenges the measurement team has faced and what results it delivers. Tor has currently more than 30 different measurement tools. The talk will introduce you to some of them and show what you can do to profit from them.

Presenters:

• Jens Kubieziel - TorServers.net
  Jens Kubieziel is a mathematician and works as a data protection officer and in the field of IT security. Besides that he is a member of TorServers.net and runs several exit relays and bridges.

Links:

• https://deepsec.net/archive/2015.deepsec.net/speaker.html#PSLOT230
• https://infocon.org/cons/DeepSec/DeepSec 2015/Measuring the TOR Network - Jens Kubieziel.mp4
• https://infocon.org/cons/DeepSec/DeepSec 2015/Measuring the TOR Network - Jens Kubieziel.srt (subtitles)

Similar Presentations:

• The Next HOPE (2010) / Tor and Internet Censorship
• 30C3 (2013) / The Tor Network: We're living in interesting times
• May Contain Hackers (MCH2022) / Modernizing the Tor Ecosystem for the Future