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.
  • 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
arturjanc's profile
Artur Janc
Artur Janc
Artur Janc
@arturjanc

Tweets

Artur Janc

@arturjanc

Making the web platform more secure one Twitter flamewar at a time.

Zurich, Switzerland
Joined February 2012

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. Sebastian Lekies‏ @slekies 25 Dec 2016

      Another CSP nonce bypass, this time for reflected XSS: http://sebastian-lekies.de/csp/attacker2.php …. I will collect more bypasses here: https://goo.gl/t5VLIX 

      3 replies 12 retweets 37 likes
    2. baseband javascript rce nightmare scenario‏ @randomdross 25 Dec 2016
      Replying to @slekies

      At first glance I believe https://github.com/w3c/webappsec-csp/issues/98 … from @arturjanc would cover this specific case. (cc @mikewest)

      1 reply 0 retweets 1 like
    3. Gábor Molnár‏ @molnar_g 25 Dec 2016
      Replying to @randomdross @slekies and

      Here markup is stolen,nonce is extracted,then injected.The mitigation wouldn't work here I think.

      1 reply 0 retweets 0 likes
    4. Eduardo Vela‏ @sirdarckcat 26 Dec 2016
      Replying to @molnar_g @randomdross and

      why? It seems like that proposal addresses Sebastian's concern for this PoC

      2 replies 0 retweets 0 likes
    5. Sebastian Lekies‏ @slekies 26 Dec 2016
      Replying to @sirdarckcat @molnar_g and

      For the second PoC it would work, but I think gabor is referring to the first one.

      6 replies 0 retweets 0 likes
    6. Mike West‏ @mikewest 26 Dec 2016
      Replying to @slekies

      : As with some of those vectors, `form-action` might be a mitigation strategy. @sirdarckcat @molnar_g @randomdross @arturjanc

      1 reply 0 retweets 0 likes
    7. Artur Janc‏ @arturjanc 26 Dec 2016
      Replying to @mikewest @slekies and

      Then we're trying to limit exfil so we'll likely lose. We should fix caching instead.

      2 replies 0 retweets 0 likes
      Artur Janc‏ @arturjanc 26 Dec 2016
      Replying to @arturjanc @mikewest and

      For example: prevent a nonced page from ever being cacheable, including via bfcache.

      4:20 AM - 26 Dec 2016
      2 replies 0 retweets 0 likes
        1. New conversation
        2. Mike West‏ @mikewest 26 Dec 2016
          Replying to @arturjanc

          : That seems likely to make users sad. "I hit back and then explosions! Oh noes!" @slekies @sirdarckcat @molnar_g @randomdross

          1 reply 0 retweets 0 likes
        3. Artur Janc‏ @arturjanc 26 Dec 2016
          Replying to @mikewest @slekies and

          Hmm, would a regular reload (new server request) break things in this case?

          2 replies 0 retweets 0 likes
        4. Eduardo Vela‏ @sirdarckcat 26 Dec 2016
          Replying to @arturjanc @mikewest and

          yes, breaking the bfcache would be pretty horrible.

          0 replies 0 retweets 0 likes
        5. End of conversation
        1. Mike West‏ @mikewest 26 Dec 2016
          Replying to @arturjanc

          : But yeah fixing the class would be lovely. Suggest away! @slekies @sirdarckcat @molnar_g @randomdross

          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