[tor-bugs] #28496 [Obfuscation/BridgeDB]: Consider dropping yahoo from the bridgedb email domains

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#28496: Consider dropping yahoo from the bridgedb email domains
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 Reporter:  arma                          |          Owner:  dgoulet
     Type:  enhancement                   |         Status:  assigned
 Priority:  Medium                        |      Milestone:
Component:  Obfuscation/BridgeDB          |        Version:
 Severity:  Normal                        |     Resolution:
 Keywords:  anti-censorship-roadmap-2019  |  Actual Points:
Parent ID:                                |         Points:  1
 Reviewer:                                |        Sponsor:  Sponsor19
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Comment (by cohosh):

 This is related to an issue brought up by pili recently due to
 conversation in #tor. A bridge user was complaining that the accepted
 email providers required giving up personal information (a phone number)
 in order to make an account so they could get bridges.

 I wonder if it's possible to assess what kind of sybil detection each of
 these providers have? For example, they might also be doing it by IP
 address which would be transparent to us but still effective (though maybe
 not against an ISP that access to many IPs).

 Somewhat relatedly, we could do tests as partially described in our obfs4
 testing ticket ##29279 that check how quickly the bridges handed out via
 different providers and different methods are being enumerated in a few
 target regions. I think this would give us information separate from
 #9316. This would be a good thing to do consistently I think, both before
 and after we make changes to how we do our distribution.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28496#comment:7>
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