[tor-project] Anti-censorship team monthly report: September 2019

Philipp Winter phw at torproject.org
Tue Oct 1 18:28:59 UTC 2019

Hi everyone,

Here's what the anti-censorship team has been up to in September:


- Snowflake will be part of the upcoming Windows version for Tor
  Browser: <https://bugs.torproject.org/25483>

- Moved from the Chrome WebRTC standalone library to the Pion/WebRTC
  library in our proxies and clients.


* Published a prototype of sharknado: a flow obfuscator for obfs4 (and
  other pluggable transports).  Sharknado is a net.Conn wrapper that
  injects padding traffic to thwart traffic classification attacks.
  Here's some more info: <https://bugs.torproject.org/30716#comment:10>

* Improved obfs4 bridge setup guides.  Thanks to several volunteers who
  spotted issues in our guides and contributed new guides!

* Updated our obfs4 Docker image to the new Debian buster.  Made our
  image's "latest" tag point to the latest version, which is currently
  0.2: <https://bugs.torproject.org/31692>
  Thanks to a volunteer, we now have a list of usability issues that we
  will tackle soon: <https://bugs.torproject.org/31834>


* Removed the email link to frontdesk at tpo from BridgeDB's landing page
  and added links to our documentation:
  Released BridgeDB version 0.8.2 after the merge.

* Worked on syncing BridgeDB's usage metrics over to the metrics team:

* Made lots of progress on updating BridgeDB's requirements.txt file:
  <https://bugs.torproject.org/29484>  Got to a point where all unit
  tests pass with up-to-date libraries.

* Started working on a specification for BridgeDB's usage metrics:

* Started experimenting with a language switcher for BridgeDB:

* BridgeDB's assignments.log file are now archived by CollecTor again:
  This allows bridge operators to see over what mechanism their bridges
  are distributed: HTTPS, email, moat, or manual.


* GetTor now uses the Internet Archive and a Google Drive folder to
  distribute Tor Browser links.  Give it a shot by sending an email to
  gettor at torproject.org and write "windows", "osx", or "linux" in the
  email's body.

* Updated documentation and added nagios check to monitor GetTor's email


* Worked with new obfs4 bridge operators who set up a bridge as part of
  our bridge campaign:
  So far, we are counting 82 new bridges.  Thanks to everyone who

* Provided an NGO with private obfs4 bridges for distribution among its
  users.  We are working with a set of operators to set up new,
  reliable, and fast private bridges, so we can help other NGOs:


* Deployed a set of new default obfs4 bridges thanks to Tobias Pulls
  from Karlstad University: <https://bugs.torproject.org/31164>

* Fixed a number existing papers and added a WebSci'18 paper to
  CensorBib: <https://censorbib.nymity.ch>

* Fixed outdated documentation on "BridgeDistribution" in tor's man
  page: <https://bugs.torproject.org/31807>

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