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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

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    1. John Wilander‏ @johnwilander 22 Nov 2017
      Replying to @mikewest @ericlaw

      Sure. But it needs to be signaled to the user since this is a restriction for the user’s sake, not the site owner’s.

      1 reply 0 retweets 0 likes
    2. Mike West‏ @mikewest 22 Nov 2017
      Replying to @johnwilander @ericlaw

      I guess I’d point back to @__apf__, @estark37, et al’s research. My understanding is that users don’t generally notice the _absence_ of positive indications of security.

      1 reply 0 retweets 1 like
    3. John Wilander‏ @johnwilander 22 Nov 2017
      Replying to @mikewest @ericlaw and

      Still, no browser has abandoned padlock/green bar. And as I said at the WebAppSec meeting, password and contact auto fill should really only work on Single Trust pages.

      2 replies 0 retweets 1 like
    4. Mike West‏ @mikewest 22 Nov 2017
      Replying to @johnwilander @ericlaw and

      To the former: yet! To the latter: I worry that very few forms would meet that requirement, and that it would be worse for users to make sign-in/payment less reliable. It’s a trade-off, to be sure, but seems to me to be a reasonable one.

      1 reply 0 retweets 0 likes
    5. Ryan Sleevi‏ @sleevi_ 22 Nov 2017
      Replying to @mikewest @johnwilander and

      Counter-argument: When you buy a sandwich at the local deli, is it useful and actionable to know that 13 parties will have access to your sandwich purchase details (credit card, payment vendor, outsourced accountant, etc)

      1 reply 0 retweets 5 likes
    6. Emily Stark‏ @estark37 22 Nov 2017
      Replying to @sleevi_ @mikewest and

      that's not an accurate analogy, though. what this tells you is that 13 parties might or might not be accessing your details, and doesn't tell you at all about 4 others (e.g. data shared server-side)

      1 reply 0 retweets 3 likes
    7. Ryan Sleevi‏ @sleevi_ 22 Nov 2017
      Replying to @estark37 @mikewest and

      Ryan Sleevi Retweeted John Wilander

      Yeah, got messed up by Twitter threading and thought @mikewest was replying to https://twitter.com/johnwilander/status/933384498682703873 … My question is whether or not knowing "13 parties" is actionable for users, and whether it's inconsistent with real world expectations and experiences.

      Ryan Sleevi added,

      John Wilander @johnwilander
      Replying to @estark37 @mikewest and 2 others
      Maybe just counting the third parties and displaying that might help? “37 orgs are listening in as you authenticate.” “12 orgs are listening in as you post this anonymous tip.”
      2 replies 0 retweets 0 likes
    8. John Wilander‏ @johnwilander 22 Nov 2017
      Replying to @sleevi_ @estark37 and

      It’s actionable in that users can ask questions and opt out. Why are 13 orgs listening in to my conversation with my physician? Why do the listen in when I submit an anonymous tip?

      2 replies 0 retweets 0 likes
    9. Artur Janc‏ @arturjanc 22 Nov 2017
      Replying to @johnwilander @sleevi_ and

      This mental model is the main problem with such a proposal -- loading resources from other domains is in no way equivalent to allowing owners of these domains to "listen in" on the user's interaction with your site.

      1 reply 0 retweets 1 like
    10. John Wilander‏ @johnwilander 22 Nov 2017
      Replying to @arturjanc @sleevi_ and

      I go to my healthcare provider’s page on diabetes, prostate cancer, or abortion. The page loads 3rd-parties. No sensitive leakage? 3rd-party script sends off form data in cross-origin pixel requests. No leakage?

      1 reply 0 retweets 0 likes
      Artur Janc‏ @arturjanc 22 Nov 2017
      Replying to @johnwilander @sleevi_ and

      First of all, you should define what you mean by "loads 3rd-parties". Images? Fonts? Frames? Stylesheets? Scripts? Scripts with SRI?

      5:01 PM - 22 Nov 2017
      • 1 Like
      • Ryan Sleevi
      1 reply 0 retweets 1 like
        1. New conversation
        2. John Wilander‏ @johnwilander 22 Nov 2017
          Replying to @arturjanc @sleevi_ and

          All of them. But real 3rd-parties, not just cross-origin with the same owner.

          1 reply 0 retweets 0 likes
        3. Artur Janc‏ @arturjanc 22 Nov 2017
          Replying to @johnwilander @sleevi_ and

          <img src="https://evil.com " referrerpolicy="no-referrer" /> What can http://evil.com  do?

          3 replies 0 retweets 1 like
        4. Eric Lawrence  🎻‏ @ericlaw 22 Nov 2017
          Replying to @arturjanc @johnwilander and

          Demand a unique token in the URL. Get Referer in browsers that don't support Referer policy.

          0 replies 0 retweets 0 likes
        5. End of conversation

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