[tor-bugs] #16979 [Tor]: Prevent selection of ajacent nodes from the same cooperative jurisdictions

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#16979: Prevent selection of ajacent nodes from the same cooperative jurisdictions
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     Reporter:  cypherpunks  |      Owner:
         Type:  defect       |     Status:  new
     Priority:  normal       |  Milestone:  Tor: very long term
    Component:  Tor          |    Version:
   Resolution:               |   Keywords:
Actual Points:               |  Parent ID:
       Points:               |
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Changes (by arma):

 * component:  - Select a component => Tor
 * milestone:   => Tor: very long term


Comment:

 This is a fine idea, except that restricting your path selection could
 harm your anonymity against *other* attackers. There's a balance to be
 made, and all the aspects to be balanced are not well-understood.

 I recommend looking at
 "20,000 In League Under the Sea: Anonymous Communication, Trust, MLATs,
 and Undersea Cables"
 on https://petsymposium.org/2015/program.php as a paper that explores this
 option in more detail.

 (After all, you don't just want to consider the location of the relay --
 you want to consider what countries the traffic goes through on the way
 from one relay to the next, and back.)

 Setting to 'very long term' milestone since there's plenty of research to
 be done first, and it's likely that this particular algorithm turns out
 not to be the best choice. (We might want to close the ticket eventually
 if it doesn't move forward more, on the theory that we know about the
 research area, and this particular ticket does not yet contribute much to
 the research area.)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16979#comment:1>
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