[tor-bugs] #9500 [- Select a component]: Bridges still Entry Guards?

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#9500: Bridges still Entry Guards?
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 Reporter:  nwf                   |          Owner:     
     Type:  defect                |         Status:  new
 Priority:  normal                |      Milestone:     
Component:  - Select a component  |        Version:     
 Keywords:                        |         Parent:     
   Points:                        |   Actualpoints:     
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 `torspec/proposals/125-bridges.txt` says

 {{{
 3.7. Do we need a second layer of entry guards?

   If the bridge user uses the bridge as its entry guard, then the
   triangulation attacks from Lasse and Paul's Oakland paper work to
   locate the user's bridge(s).

   Worse, this is another way to enumerate bridges: if the bridge users
   keep rotating through second hops, then if you run a few fast servers
   (and avoid getting considered an Exit or a Guard) you'll quickly get
   a list of the bridges in active use.

   That's probably the strongest reason why bridge users will need to
   pick second-layer guards. Would this mean bridge users should switch
   to four-hop circuits?

   We should figure this out in the 0.2.1.x timeframe.
 }}}

 That timeframe has come and gone and I did not see any tickets about this
 behavior (sorry if I missed any!).

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9500>
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