[tor-bugs] #5028 [Ooni]: Tor bridge scanning

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#5028: Tor bridge scanning
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 Reporter:  hellais  |          Owner:  runa                     
     Type:  project  |         Status:  assigned                 
 Priority:  normal   |      Milestone:  Sponsor F: March 15, 2012
Component:  Ooni     |        Version:                           
 Keywords:           |         Parent:                           
   Points:           |   Actualpoints:                           
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Comment(by karsten):

 Replying to [comment:37 hellais]:
 > I agree with what Jake is saying. To put it in another way, what do we
 plan on discovering by doing this scan that we don't already know?

 I think I addresses that question in my reply to Jake's comment above.

 > Is this discovery worth possibly risking the disclosure of Tor bridge
 addresses to the adversary?

 There are not just risks, but also potential benefits.  If we have good
 results from active scans we might be able to infer reachability
 information from passive data, e.g., by
 [https://metrics.torproject.org/papers/blocking-2011-09-15.pdf looking at
 bridge statistics].  And once we have a reliable way to say which bridges
 are blocked in a country we can stop giving out blocked bridges to users
 in that country.

 > Maybe we can do some extra research on the active probing being done by
 GFW. There is already a lot of information that we have collected with
 respect to this in the past and we could get more.

 That's not what the deliverable is about.  But this is already addresses
 in my response to Jake, too.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5028#comment:39>
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