Skip to content
  • Home Home Home, current page.
  • Moments Moments Moments, current page.

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
rootkovska's profile
Joanna Rutkowska
Joanna Rutkowska
Joanna Rutkowska
Verified account
@rootkovska

Tweets

Joanna RutkowskaVerified account

@rootkovska

Strategy & security at @golemproject. Previously: founder of @QubesOS and Invisible Things Lab. Distrusts computers.

Warsaw
blog.invisiblethings.org
Joined July 2014

Tweets

  • © 2018 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • 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. Joanna Rutkowska‏Verified account @rootkovska Nov 3

      I've been trying to figure the essential _features_ of the The Ethereum (computer) vs. mere _implementation_ "details"; so far have come up with: 1. strong integrity protection for your code (customarily called "smart contract"), 2. strong availability for your code. (1/)

      7 replies 26 retweets 67 likes
      Show this thread
    2. Joanna Rutkowska‏Verified account @rootkovska Nov 3

      (2/) The price we pay for these: 1. Lack of confidentiality for our code, 2. Huge performance penalty. We now try to fix both problems by reducing decentralization: offchain computation in TEEs like SGX (which always will have single root of trust -- CPU vendors), sharding.

      4 replies 5 retweets 33 likes
      Show this thread
      Joanna Rutkowska‏Verified account @rootkovska Nov 3

      (3/) The "decentralization" is a mere implementation detail. OT1H it allows us to have integrity and availability for our code, OT2H it ruins privacy and performance. The challenge is to find the right tradeoff. But "decentralization" doesn't give us anything in itself, does it?

      2:13 AM - 3 Nov 2018
      • 7 Retweets
      • 25 Likes
      • Karel Paul Moment nothingmuch Zaki Manian gerhart BadAdviceFactory Zhengpeng Hou Justin Smith #SOSManusNauru
      7 replies 7 retweets 25 likes
        1. Joanna Rutkowska‏Verified account @rootkovska Nov 3

          (4/) So, if I could, say, launch a traditional server onto an Earth's orbit, perhaps this would be "reasonably" as good a solution as Ethereum? Assuming the root account was disabled and the cost of shooting it down (physically) was high enough?

          12 replies 8 retweets 27 likes
          Show this thread
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. New conversation
        2. Ben Laurie‏Verified account @BenLaurie Nov 3
          Replying to @rootkovska

          Hah. Prepare for a bunch of incoherent disagreement.

          1 reply 0 retweets 2 likes
        3. 1 more reply
        1. Christopher Byrd‏ @cbyrd01 Nov 3
          Replying to @rootkovska

          Something I've always wondered, what about when decentralized storage and compute is used for illegal activities? Beyond illegal and all the related jurisdictional issues, what about immoral, unethical things? What is the culpability of the participants?

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. Samuli Pahalahti‏ @samupaha Nov 3
          Replying to @rootkovska

          Decentralization gives us resiliency. It's very difficult to take down the system. If a node goes down, there is always another one to take its place.

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. jonwarnick‏ @jonwarnick Nov 3
          Replying to @rootkovska

          @G7685502036 got censorship resistance. Distributed means I can, without asking permission, put up a node, sync, and theoretically have chance of my processed block with my tx added to block chain. Permissioned networks, like @EOS, restrict who may process tx. @lukestokes

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. John Sam‏ @G7685502036 Nov 3
          Replying to @rootkovska

          censorship resistance

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. Luis Grangeia‏ @lgrangeia Nov 3
          Replying to @rootkovska

          The decentralization of ethereum is like SGX but without blindly trusting the CPU. Is there another way to ensure code integrity without relying on a "single root of trust"?

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo

      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

        • © 2018 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Cookies
        • Ads info