Opened 3 years ago

Last modified 23 months ago

#20216 closed defect

Iran blocking of vanilla and obfs3, 2016-08 and 2016-09 — at Initial Version

Reported by: dcf Owned by:
Priority: Medium Milestone:
Component: Circumvention/Censorship analysis Version:
Severity: Normal Keywords: censorship block ir
Cc: mrphs Actual Points:
Parent ID: Points:
Reviewer: Sponsor:

Description

Direct users in Iran dropped from 8,000 to 2,000 between 2016-08-20 and 2016-08-23. The numbers recovered to 4,000, then crashed to 400 on 2016-09-03 and 2016-09-04.

Originally from https://metrics.torproject.org/userstats-relay-country.png?start=2016-06-24&end=2016-09-22&country=ir&events=off link

Looking at bridge users, there is an increase right around 2016-08-20, the time of the first blocking, then an abrupt return to previous levels around 2016-09-03, the time of the second blocking.

Originally from https://metrics.torproject.org/userstats-bridge-combined.png?start=2016-06-24&end=2016-09-22&country=ir link

Looking at the graph of bridge users by transport, obfs4 continued working while obfs3 and vanilla were blocked.

Originally from https://metrics.torproject.org/userstats-bridge-country.png?start=2016-06-24&end=2016-09-22&country=ir link

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