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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
      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?

      11:25 AM - 7 Oct 2019
      • 4 Likes
      • Tom Paseka 🔥 Alexander Gallego Mohamed Hamad
      5 replies 0 retweets 4 likes
        1. New conversation
        2. Alzimon‏ @Alzimon 8 Oct 2019
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          Replying to @taviso @Cron2Gert and

          So denying people control over DNS and whisking off queries to a jurisdiction with weaker privacy legislation is beneficial if their network is untrustworthy? I see.

          1 reply 0 retweets 1 like
        3. Tavis Ormandy‏Verified account @taviso 8 Oct 2019
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          Replying to @Alzimon @Cron2Gert and

          Yes, if your network is untrustworthy "whisking off" the queries to a trustworthy network seems like a good idea to me. Nobody is denying anyone control, what are you basing that on?

          1 reply 0 retweets 1 like
        4. 5 more replies
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        2. Paul Vixie‏ @paulvixie 7 Oct 2019
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          Replying to @taviso @Cron2Gert and

          if you can't trust your upstream you need more protection than DoH pretends to give you.

          3 replies 1 retweet 14 likes
        3. Ren‏ @ren_tragger 15 Oct 2019
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          Replying to @paulvixie @taviso and

          To be brazen and add to this, if your upstream is hijacking your DNS or blocking DoT, you have serious issues that DoH won't solve and it easily interferes with local net DNS (which I doubt is solvable without the ISP also taking advantage).

          2 replies 0 retweets 0 likes
        4. 3 more replies
        1. New conversation
        2. Jeroen Jacobs‏ @JeroenJacobs79 28 Oct 2019
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          Replying to @taviso @Cron2Gert and

          See, this is what I don't get about the pro-DoH argument: why do you assume your DoH provider will treat your dns data better than your isp? The two biggest DoH providers (Google and CloudFlare) are already in the advertising business.

          1 reply 0 retweets 1 like
        3. Jeroen Jacobs‏ @JeroenJacobs79 28 Oct 2019
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          Replying to @JeroenJacobs79 @taviso and

          To me, it seems that people believe that a tech giant will threat your dns data better than your isp. I really wish I understood that rationele, because at this point, I just don't. And it feels like I'm missing something obvious here...

          1 reply 0 retweets 0 likes
        4. 2 more replies
        1. New conversation
        2. 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
        3. 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
        4. 11 more replies

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