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taviso's profile
Tavis Ormandy
Tavis Ormandy
Tavis Ormandy
Verified account
@taviso

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Tavis OrmandyVerified account

@taviso

Vulnerability researcher at Google. This is a personal stream, opinions expressed are mine.

California
taviso.decsystem.org
Joined April 2008

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    1. Bert Hubert  🇪🇺‏ @PowerDNS_Bert 7 Oct 2019
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      Bert Hubert  🇪🇺 Retweeted Boing Boing

      This letter from the US service provider industry is quite something. It talks about "data competition" which implies people's data are a legit thing to sell. They also note that encrypting DNS would harm the advertising business. This is why we do not trust the US industry.https://twitter.com/BoingBoing/status/1181206454281396224 …

      Bert Hubert  🇪🇺 added,

      Boing BoingVerified account @BoingBoing
      America’s rotten ISPs object to encrypted DNS, argue that losing the ability to spy on your traffic puts them at a competitive disadvantage https://boingboing.net/2019/10/07/brandeiswashing.html …
      2 replies 30 retweets 67 likes
      Show this thread
    2. Tavis Ormandy‏Verified account @taviso 7 Oct 2019
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      Replying to @PowerDNS_Bert

      This is a confusing tweet Bert, aren't you on the side of the ISPs?

      1 reply 0 retweets 0 likes
    3. Aki Tuomi‏ @AkiTuomi 7 Oct 2019
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      Replying to @taviso @PowerDNS_Bert

      So you can only be against DoH or for it?

      1 reply 0 retweets 0 likes
    4. Tavis Ormandy‏Verified account @taviso 7 Oct 2019
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      Replying to @AkiTuomi @PowerDNS_Bert

      The core point of contention is whether ISPs get the queries by default. The benefit of DoH is that we can control who gets to see them. I understand you're indifferent to DoH if the ISP still gets the queries. I'm sure you already understand this, I don't know why you asked?

      2 replies 0 retweets 1 like
    5. Gert Döring‏ @Cron2Gert 7 Oct 2019
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      Replying to @taviso @AkiTuomi @PowerDNS_Bert

      "Whether the ISPs get the queries" is not even my main complaint, it's "the browser is willfully bypassing system settings" and "over HTTP". DNS over TLS exists, quad-X resolvers (with DoT) exist. DoH is just silly.

      1 reply 0 retweets 6 likes
    6. Tavis Ormandy‏Verified account @taviso 7 Oct 2019
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      Replying to @Cron2Gert @AkiTuomi @PowerDNS_Bert

      The problem is you are one of the lucky few who only use trustworthy networks. Many people do not have that luxury, like the customers of the ISPs in the article above. Is it your opinion that it just sucks to be them, and we should do nothing?

      5 replies 0 retweets 4 likes
    7. David Sommerseth‏ @DavidSommerseth 28 Oct 2019
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      Replying to @taviso @Cron2Gert and

      If you can't trust your network, DoH doesn't solve anything. VPN is better at solving that. Because right after any DNS query, encrypted or not comes another TCP/UDP connection which already gives an indication of where you're headed anyway.And the rest is traffic fingerprinting.

      1 reply 0 retweets 0 likes
    8. Tavis Ormandy‏Verified account @taviso 28 Oct 2019
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      Replying to @DavidSommerseth @Cron2Gert and

      DoH certainly does solve something, DNS snooping. That is a problem affecting real people today. It does not solve all problems, just like HTTPS doesn't solve all problems.

      1 reply 0 retweets 0 likes
    9. David Sommerseth‏ @DavidSommerseth 28 Oct 2019
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      Replying to @taviso @Cron2Gert and

      First, your argument was about trusting the network. To have access to a trusted network, only VPN can do that over an untrusted link. Secondly, DoH solves nothing which DoT already solves. DoH is a fascinating way to shift control by default from local nets to an external part.

      2 replies 0 retweets 0 likes
      Tavis Ormandy‏Verified account @taviso 28 Oct 2019
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      Replying to @DavidSommerseth @Cron2Gert and

      I don't follow your argument, a VPN also moves control away from the local network, why is that good? The advantage of DoH over DoT is that it's difficult to block, so it does solve something that DoT doesn't.

      8:43 AM - 28 Oct 2019
      1 reply 0 retweets 0 likes
        1. New conversation
        2. David Sommerseth‏ @DavidSommerseth 29 Oct 2019
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          Replying to @taviso @Cron2Gert and

          There are more issues here. DoH won't protect you from being fingerprinted and put on a surveillance list, if you circumvent the ordinary DNS. Fingerprinting via VPN against a network you choose to trust is much harder, as it protects DNS *and* the traffic related to the DNS req.

          1 reply 0 retweets 0 likes
        3. Tavis Ormandy‏Verified account @taviso 29 Oct 2019
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          Replying to @DavidSommerseth @Cron2Gert and

          You said DoH is bad because it takes away control from the local network, but VPN is good because it takes even more control away from the local network. I think your argument doesn't make much sense, why do you like DoT?

          1 reply 0 retweets 0 likes
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