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
tehjh's profile
Jann Horn
Jann Horn
Jann Horn
@tehjh

Tweets

Jann Horn

@tehjh

works at Google Project Zero. personal account.

Joined August 2011

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. Jann Horn‏ @tehjh 18 Mar 2018
      • Report Tweet
      • Report NetzDG Violation
      Replying to @tehjh @slightlylate and

      how do you pick the trusted public-DNS resolver you need for this?

      1 reply 0 retweets 0 likes
    2. Alex Russell‏ @slightlylate 18 Mar 2018
      • Report Tweet
      • Report NetzDG Violation
      Replying to @tehjh @lcamtuf and

      We operate such a service today. Idea is we resolve these request's host *only* via that path, and cert must line up with resolved IP. Can make it configurable as a (new) group policy (and disableable) for the paranoid. I'm sure there's a hole in this... 🤔🤔🤔

      1 reply 0 retweets 0 likes
    3. Jann Horn‏ @tehjh 18 Mar 2018
      • Report Tweet
      • Report NetzDG Violation
      Replying to @slightlylate @lcamtuf and

      are you proposing leaking hostnames to Google independent of normal OS DNS settings?

      1 reply 0 retweets 1 like
    4. Alex Russell‏ @slightlylate 18 Mar 2018
      • Report Tweet
      • Report NetzDG Violation
      Replying to @tehjh @lcamtuf and

      Or whomever else you set as your "public only" resolver, yes. If the issue is DNS being overloaded for public/private (and another decade+ of this debate about something *every native app can do*), let's disentangle DNS.

      1 reply 0 retweets 0 likes
    5. Jann Horn‏ @tehjh 18 Mar 2018
      • Report Tweet
      • Report NetzDG Violation
      Replying to @slightlylate @lcamtuf and

      and if the "public only" resolver lies to you, your internal network gets exposed to the internet?

      2 replies 0 retweets 0 likes
    6. Jann Horn‏ @tehjh 18 Mar 2018
      • Report Tweet
      • Report NetzDG Violation
      Replying to @tehjh @slightlylate and

      and how do you pick the default resolver, given that the OS has no infrastructure for telling you what it is? default to Google? what should other browsers do?

      1 reply 0 retweets 1 like
    7. Alex Russell‏ @slightlylate 18 Mar 2018
      • Report Tweet
      • Report NetzDG Violation
      Replying to @tehjh @lcamtuf and

      Other browsers can do whatever they think is right for users (e.g., SafeBrowsing). Default situation is these requests fail (as they do today) and some services will run transitional proxies. Others won't. Cest la vie.

      1 reply 0 retweets 0 likes
    8. Jann Horn‏ @tehjh 18 Mar 2018
      • Report Tweet
      • Report NetzDG Violation
      Replying to @slightlylate @lcamtuf and

      IOW, you're creating a mechanism that is kinda useless you're willing to break things for non-Chrome users?

      1 reply 0 retweets 1 like
    9. Alex Russell‏ @slightlylate 18 Mar 2018
      • Report Tweet
      • Report NetzDG Violation
      Replying to @tehjh @lcamtuf and

      This is all standards work. New things are defacto unsupported. Turns out making progress on new web features is hard, in part because skepticism about potential for success is pervasive!

      2 replies 0 retweets 1 like
    10. Jann Horn‏ @tehjh 18 Mar 2018
      • Report Tweet
      • Report NetzDG Violation
      Replying to @slightlylate @lcamtuf and

      for normal features, you can fall back when the feature isn't supported. but here, the goal is to remove server-side functionality, which you can't do until all clients support it. so AFAICS the barrier to success is way higher than for normal features

      2 replies 0 retweets 1 like
      Jann Horn‏ @tehjh 18 Mar 2018
      • Report Tweet
      • Report NetzDG Violation
      Replying to @tehjh @slightlylate and

      so it won't provide any of the desired benefit for a long time, and at the same time, you're adding a big heap of new complicated infrastructure and security policy changes on the client?

      11:28 PM - 18 Mar 2018
      • 1 Like
      • Ryan Sleevi
      0 replies 0 retweets 1 like

      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