Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.

This is the legacy version of twitter.com. We will be shutting it down on June 1, 2020. Please switch to a supported browser, or disable the extension which masks your browser. You can see a list of supported browsers in our Help Center.

  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
taviso's profile
Tavis Ormandy
Tavis Ormandy
Tavis Ormandy
Verified account
@taviso

Tweets

Tavis OrmandyVerified account

@taviso

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

California
taviso.decsystem.org
Joined April 2008

Tweets

  • © 2020 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Imprint
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Mathias‏ @matthegap Feb 26
      • Report Tweet
      • Report NetzDG Violation
      Replying to @tqbf @taviso @wise_steve

      ??? Not beeing a native English speaker, I do unfortunately not know that figure of speech.

      1 reply 0 retweets 0 likes
    2. Thomas H. Ptacek‏ @tqbf Feb 27
      • Report Tweet
      • Report NetzDG Violation
      Replying to @matthegap @taviso @wise_steve

      You failed to connect “ESNI is not deployed yet” with “DoH is a net negative for privacy”. The current status quo is about as bad as it can get.

      1 reply 0 retweets 2 likes
    3. Mathias‏ @matthegap Feb 27
      • Report Tweet
      • Report NetzDG Violation
      Replying to @tqbf @taviso @wise_steve

      # No DoH ISP sees DNS query for weirdporn.xx, TLS to 1.2.3.4:443 (Servername: weirdporn.xx) Cloudflare: nothing Knows what you did: ISP # With DoH ISP sees TLS to 1.2.3.4:443 (Servername: weirdporn.xx) Cloudflare: DNS query for weirdporn.xx Knows what you did: ISP & Cloudflare

      2 replies 0 retweets 1 like
    4. Tavis Ormandy‏Verified account @taviso Feb 27
      • Report Tweet
      • Report NetzDG Violation
      Replying to @matthegap @tqbf @wise_steve

      We know for sure that ISPs are abusing access to DNS, and TRRs legally cannot. If you believe your ISP is better than a TRR, fine, disable it, but this is the better default. It's true that ISPs may abuse SNI in future, but that's not a good reason to block DoH.

      1 reply 0 retweets 0 likes
    5. Tavis Ormandy‏Verified account @taviso Feb 27
      • Report Tweet
      • Report NetzDG Violation
      Replying to @taviso @matthegap and

      TRR is Trusted Recursive Resolver, it's not accurate to say "Cloudflare", because other providers have also joined the program and I imagine others will in future. https://wiki.mozilla.org/Security/DOH-resolver-policy …

      2 replies 0 retweets 3 likes
    6. Mathias‏ @matthegap Feb 27
      • Report Tweet
      • Report NetzDG Violation
      Replying to @taviso @tqbf @wise_steve

      As I understand it, you can only chose one at the moment. Having a list of trustworthy ones (like @applied_privacy ) and alternating through them would make the situation a lot better. Do you know if @mozilla plans something like this?

      1 reply 0 retweets 0 likes
    7. Tavis Ormandy‏Verified account @taviso Feb 27
      • Report Tweet
      • Report NetzDG Violation
      Replying to @matthegap @tqbf and

      The page I just linked to explains how more providers can join, the bar is *very* high, @nextdnsio have also joined. There's no reason you can't just use any provider you want though?

      1 reply 0 retweets 0 likes
    8. Mathias‏ @matthegap Feb 27
      • Report Tweet
      • Report NetzDG Violation
      Replying to @taviso @tqbf and

      I know I can change it, but hardly anyone will ever do that. As long as there is a single default setting that is used by anyone all the time, all the metadata eggs will end up in one basket, and that's problem, no matter if it is Cloudflare or someone else.

      1 reply 0 retweets 0 likes
    9. Tavis Ormandy‏Verified account @taviso Feb 27
      • Report Tweet
      • Report NetzDG Violation
      Replying to @matthegap @tqbf and

      You're saying it's a safer default to use an entity known to behave badly, than to use an entity that has qualified for TRR and is legally bound to good behaviour....? 😕 I mean, nobody is arguing shouldn't be allowed to shoot yourself in the foot, but default... ?

      1 reply 0 retweets 0 likes
    10. Mathias‏ @matthegap Feb 27
      • Report Tweet
      • Report NetzDG Violation
      Replying to @taviso @tqbf and

      I'm saying it is safer to not centralise everyone's browsing metadata at a single company, no matter which. BTW: Does that "legally bound" claim you mention include non-US citizens?

      1 reply 0 retweets 0 likes
      Tavis Ormandy‏Verified account @taviso Feb 27
      • Report Tweet
      • Report NetzDG Violation
      Replying to @matthegap @tqbf and

      Is using lots of badly behaving providers better than using a few trusted and vetted providers? Your citizenship status is not relevant....(wut??!?!?!). This does not seem like a rational question.

      3:44 PM - 27 Feb 2020
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Mathias‏ @matthegap Feb 27
          • Report Tweet
          • Report NetzDG Violation
          Replying to @taviso @tqbf and

          US based privacy are not exactly known to care a lot lot about foreigners and Cloudflare is a company under US jurisdiction. So yes, that question does matter to non-US people.

          1 reply 0 retweets 0 likes
        3. Tavis Ormandy‏Verified account @taviso Feb 27
          • Report Tweet
          • Report NetzDG Violation
          Replying to @matthegap @tqbf and

          I think you're confused, Mozilla are only proposing to enable this in the US. https://support.mozilla.org/en-US/kb/firefox-dns-over-https#w_about-the-us-rollout-of-dns-over-https …

          0 replies 0 retweets 0 likes
        4. End of conversation

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2020 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info