[tor-bugs] #20382 [Metrics/Atlas]: atlas doesn't check if a relay's family members also list that relay in their family (was: atlas doesn't check if all family members list themselves)

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#20382: atlas doesn't check if a relay's family members also list that relay in
their family
---------------------------+---------------------
 Reporter:  cypherpunks    |          Owner:  irl
     Type:  enhancement    |         Status:  new
 Priority:  Medium         |      Milestone:
Component:  Metrics/Atlas  |        Version:
 Severity:  Normal         |     Resolution:
 Keywords:  family         |  Actual Points:
Parent ID:                 |         Points:
 Reviewer:                 |        Sponsor:
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Changes (by teor):

 * keywords:  atlas family members => family


Comment:

 Clarified bug title.

 By the way, nick3 is wrong: the attack is to steer traffic towards
 particular nodes by listing a very large family. And it doesn't work on
 recent versions of Tor, because it checks for mutual family relationships.

 OnionOO has effective_family and alleged_family, I suggest they are
 coloured differently in the Atlas family list, like we currently colour
 missing relays differently.

 https://onionoo.torproject.org/protocol.html#details

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20382#comment:2>
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