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zeynep's profile
zeynep tufekci
zeynep tufekci
zeynep tufekci
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@zeynep

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zeynep tufekciVerified account

@zeynep

Complex systems, wicked problems. Society, technology, science and more. @UNC professor. @NYTimes columnist. My newsletter is @insight: http://www.theinsight.org 

floating in a most peculiar way
theinsight.org
Joined August 2009

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    1. Tavis Ormandy‏Verified account @taviso 10 Feb 2018
      Replying to @taviso @zeynep and

      Would you argue that my banana-factor authentication scheme is better than none if it has the same property of reducing opportunistic phishing when only enabled for 1% of users?

      2 replies 0 retweets 0 likes
    2. zeynep tufekci‏Verified account @zeynep 10 Feb 2018
      Replying to @taviso @alexstamos and

      I deal with a lot of people who are political targets but not necessarily state-level targets. There is a significant amount of opportunistic targeting of such people by people with zero tech skills nor economic incentives. Even SMS 2FA cuts that a lot.

      1 reply 0 retweets 5 likes
    3. Tavis Ormandy‏Verified account @taviso 10 Feb 2018
      Replying to @zeynep @alexstamos and

      You're correct, when enabled for 1% of users it effectively makes them too expensive to phish. That's only true if attacker gets 1% more victims when he supports it. If he gets 30% more victims, economics change and worth supporting. Attacker already has capability to phish.

      1 reply 0 retweets 1 like
    4. zeynep tufekci‏Verified account @zeynep 10 Feb 2018
      Replying to @taviso @alexstamos and

      In my observations, password reuse and easy to guess passwords are the huge threats on their own. Phishing, while also not apparently that much harder in theory, is actually practically out-of-reach for many of these opportunistic attackers.

      1 reply 1 retweet 4 likes
    5. zeynep tufekci‏Verified account @zeynep 10 Feb 2018
      Replying to @zeynep @taviso and

      Could attackers improve? Sure, in theory. But in theory people could be convinced not to reuse passwords or make them their kid’s name. That said, I spend much of my life trying to convince people to use auth apps or U2F.

      3 replies 0 retweets 2 likes
    6. Tavis Ormandy‏Verified account @taviso 10 Feb 2018
      Replying to @zeynep @alexstamos and

      I guess I'm not sure I understand where we disagree, we both agree that attackers can improve, and both agree they haven't yet while adoption is so low. Is it that you argue that even when forced to adapt because of high adoption of SMS-2FA, they'll just pack up and go home?

      1 reply 0 retweets 0 likes
    7. zeynep tufekci‏Verified account @zeynep 10 Feb 2018
      Replying to @taviso @alexstamos and

      Yes. In my experience, there is a non-negligible group of opportunistic attackers that can do password reuse/kid’s name password but will not/cannot escalate. This doesn’t apply to any high-value target or to systematic phishers (who have economic concerns).

      2 replies 2 retweets 3 likes
    8. Tavis Ormandy‏Verified account @taviso 10 Feb 2018
      Replying to @zeynep @alexstamos and

      I definitely disagree, you don't have to be a skilled attacker to buy a php phishing script. Right now it's more expensive for so little benefit, but when it's the only option, why wouldn't they?

      1 reply 0 retweets 0 likes
    9. zeynep tufekci‏Verified account @zeynep 10 Feb 2018
      Replying to @taviso @alexstamos and

      Because people don't operate like that. Why do people, even people whose lives are on the line, reuse passwords? Just saying "you have to buy a phishing script" will scare off so many opportunistic attackers.

      2 replies 1 retweet 1 like
    10. zeynep tufekci‏Verified account @zeynep 10 Feb 2018
      Replying to @zeynep @taviso and

      To give you an example, the LOUSY Google help pages for security keys have been a giant hurdle for me for years in getting people to use security keys. (I've been begging everyone I know in Google for years to no avail).

      1 reply 1 retweet 3 likes
      zeynep tufekci‏Verified account @zeynep 10 Feb 2018
      Replying to @zeynep @taviso and

      I ran into so many problems with the fact that Google wouldn't bother to have a decent help page for a fantastic product, we now use an independently produced page in security key training. Huge improvement in uptake simply by putting in screenshots. https://techsolidarity.org/resources/security_key_gmail.htm …

      1:05 PM - 10 Feb 2018
      • 16 Retweets
      • 53 Likes
      • Marius Comper Mr Reed dario mov eax, [anthony] Shahram Flameyyy Xavier Stevens cleptho skry
      1 reply 16 retweets 53 likes
        1. New conversation
        2. Karefully Verded  📜‏ @hammerstyle 18 Feb 2018
          Replying to @zeynep @Pinboard and

          Any reason for picking a physical key versus something like LastPass?

          1 reply 0 retweets 0 likes
        3. Joona Immonen‏ @rinorragi 18 Feb 2018
          Replying to @hammerstyle @zeynep and

          Yes. Having another layer in authentication protects you if somebody is able to steal your password.

          0 replies 0 retweets 1 like
        4. End of conversation

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