Opened 5 months ago

Last modified 11 days ago

#29277 assigned task

Look into getting default Tor bridges scanned by external reachability tests

Reported by: cohosh Owned by: phw
Priority: Medium Milestone:
Component: Circumvention/Pluggable transport Version:
Severity: Normal Keywords: augur, measurement, ex-sponsor-19
Cc: cohosh, gk, phw Actual Points:
Parent ID: Points:
Reviewer: Sponsor: Sponsor30-must

Description (last modified by cohosh)

Take to Roya or Paul about tests available for checking the blocking of default bridges.

First determine where development/research is at with Spooky Scan or possibly Censored planet (

These systems check for blocking remotely and so might tell us something different from OONI.

Child Tickets

Change History (11)

comment:1 Changed 5 months ago by gk

Cc: gk added

comment:2 Changed 4 months ago by cohosh

Description: modified (diff)
Summary: Get default bridges scanned by Spooky ScanLook into getting default Tor bridges scanned by external reachability tests

comment:3 Changed 3 months ago by cohosh

Status: assignednew

comment:4 Changed 3 months ago by cohosh

Owner: cohosh deleted
Status: newassigned

comment:5 Changed 3 months ago by cohosh

Status: assignednew

comment:6 Changed 3 months ago by phw

Cc: phw added

comment:7 Changed 2 months ago by phw

Today, Roya visited as during our weekly anti-censorship team meeting and we briefly touched based on getting reachability scans going. David pointed out that OONI's list of default bridges (among other things) would be a great way to get started.

Roya's system has ~50,000 vantage points in 42 "non-free countries" (according to Freedom House's definition) plus a sample of other countries. Roya also wanted to know how often we want these measurements run. "At least once a day" seems like a good answer for now.

For now, I think we should:

  1. Get an initial scan going, and see what we can learn from it.
  2. Compare the scan results to OONI's data and hope that both systems agree.

comment:8 Changed 2 months ago by phw

Keywords: augur measurement added
Owner: set to phw
Status: newassigned

comment:9 Changed 2 months ago by phw

At today's anti-censorship meeting we briefly discussed this project. We decided to move forward with our list of default bridges. These are public and we don't need to worry about sanitising scan results.

comment:10 Changed 12 days ago by gaba

Keywords: ex-sponsor-19 added

Adding the keyword to mark everything that didn't fit into the time for sponsor 19.

comment:11 Changed 11 days ago by phw

Sponsor: Sponsor19Sponsor30-must

Moving from Sponsor 19 to Sponsor 30.

Note: See TracTickets for help on using tickets.