[ooni-dev] Timeline of Tor blocking

Collin Anderson collin at averysmallbird.com
Mon Feb 2 21:20:19 UTC 2015

Tor's site was blocked in Turkey in March 2014: http://cartography.io/

For the event described as "Iran – 2013 – TCP reset on all non-HTTP": this
was actually a traffic shaping behavior that matched TCP connections
against a whitelist (HTTP or HTTPS), if the connection did not match this
behavior, then the throughput was throttled down to 1 packet per second
after sixty seconds. Psiphon's bypass mechanism was to prepend "GET /
HTTP1.0" in front of traffic streams.

On Mon, Feb 2, 2015 at 2:58 PM, Sadia Afroz <sadia.afroz at berkeley.edu>

> Hi all,
> I am trying to make a list of events when different censorship regimes
> blocked Tor.
> The goal is to understand the censorship arms race, especially
> capabilities of current censors and how long it took Tor to resolve those
> issues.
> The attached pdf has all the events I could find.
> I collected these events from the Tor blog, the bug tracker and the
> censorship wiki.
> For some of the events I couldn't find any dates and also I'm not sure if
> this is a complete list of all the censorship events.
> Can any of you help me find dates of some of the events or direct me to
> other sources of information to find more events?
> Thanks!
> --
> Sadia
> _______________________________________________
> ooni-dev mailing list
> ooni-dev at lists.torproject.org
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*Collin David Anderson*
averysmallbird.com | @cda | Washington, D.C.
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