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. Eduardo Vela‏ @sirdarckcat 27 Dec 2017
      • Report Tweet
      • Report NetzDG Violation

      Eduardo Vela Retweeted mik

      Paying once for first blood and then in a lottery for the duplicates. Yay/Nay?https://twitter.com/mik235/status/946132300646858752 …

      Eduardo Vela added,

      mik @mik235
      Replying to @sirdarckcat @tqbf and 2 others
      There may be an argument that duplicate reports should get paid too, since it demonstrates that it's an easy find, therefore more severe. (Or upgrade severity then lotto-style split)
      6 replies 0 retweets 2 likes
      Show this thread
    2. mik‏ @mik235 27 Dec 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @sirdarckcat

      A split or a lottery? :)

      1 reply 0 retweets 0 likes
    3. Eduardo Vela‏ @sirdarckcat 27 Dec 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @mik235

      Lottery, but maybe reward should also be reduced to discourage colusion.

      2 replies 0 retweets 0 likes
    4. Tavis Ormandy‏Verified account @taviso 28 Dec 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @sirdarckcat @mik235

      I think the current approach is optimal, the obvious attack against a lottery is to always report issues through a dozen pseudonyms to give yourself the best odds. Even for split, no downside to reporting dozen times to reduce share of other reporter, no?

      2 replies 0 retweets 2 likes
    5. Eduardo Vela‏ @sirdarckcat 28 Dec 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @taviso @mik235

      Correct, if you report a dozen times, other finders get a smaller share. This screws up other people, but provides no financial incentive to the cheater.

      1 reply 0 retweets 0 likes
      Tavis Ormandy‏Verified account @taviso 28 Dec 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @sirdarckcat @mik235

      I don't understand, the bug is reported by two people, but I report it using ten personas. Don't I get total/11 * 10, and the other person gets total/11?

      12:06 PM - 28 Dec 2017
      2 replies 0 retweets 0 likes
        1. New conversation
        2. Eduardo Vela‏ @sirdarckcat 28 Dec 2017
          • Report Tweet
          • Report NetzDG Violation
          Replying to @taviso @mik235

          You would need to reduce the "pool" on every new duplicate. Original bug worth $1k. First finder gets $1k on triage (+$1k on fix). First dupe, lottery for $1k on fix. 2nd dupe, lotto for 500 on fix. 3rd, lottery for 250 on fix. 4th, lotto for 125. 5th gets nothing (for ex)

          1 reply 0 retweets 1 like
        3. Tavis Ormandy‏Verified account @taviso 28 Dec 2017
          • Report Tweet
          • Report NetzDG Violation
          Replying to @sirdarckcat @mik235

          I see, so if five people submit the bug, nobody gets anything? I think this does remove the incentive for collusion, although people will get angry if you wait too long and cost them their bounty haha.

          1 reply 0 retweets 2 likes
        4. 4 more replies
        1. New conversation
        2. mik‏ @mik235 28 Dec 2017
          • Report Tweet
          • Report NetzDG Violation
          Replying to @taviso @sirdarckcat

          If it's a $1024 prize for unique, it's a $2 prize each if 9 report it

          1 reply 0 retweets 0 likes
        3. Tavis Ormandy‏Verified account @taviso 28 Dec 2017
          • Report Tweet
          • Report NetzDG Violation
          Replying to @mik235 @sirdarckcat

          I think that does remove incentive for collusion, but seems unfair to the first reporter who saw his bounty shrink because vendor couldn't fix it fast enough.

          1 reply 0 retweets 1 like
        4. 1 more reply

      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