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taviso's profile
Tavis Ormandy
Tavis Ormandy
Tavis Ormandy
Verified account
@taviso

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Tavis OrmandyVerified account

@taviso

Vulnerability researcher at Google. This is a personal stream, opinions expressed are mine.

California
taviso.decsystem.org
Joined April 2008

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    1. svbl‏ @svblxyz 6 Dec 2019
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      svbl Retweeted

      No, that doesn't make sense at all. 🤦‍♂️ https://twitter.com/ppentestlabs/status/1202906268991664128 …

      svbl added,

      This Tweet is unavailable.
      6 replies 9 retweets 69 likes
    2. Tavis Ormandy‏Verified account @taviso 6 Dec 2019
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      Replying to @svblxyz

      Hmm, I dunno, the usual complaint people have about storing passwords in plaintext is that lots of people reuse passwords, so stealing them is valuable and they should be protected. They're saying they can prove their users don't reuse passwords, so stealing them is pointless!

      5 replies 0 retweets 13 likes
    3. Fourteen macaws in a trenchcoat‏ @0xMatt 6 Dec 2019
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      Replying to @taviso @svblxyz

      but why do they think they need a plaintext copy of it in their DB "To send it to you if you forget it" when standard practice is to generate a new one and send that to the user?

      2 replies 0 retweets 5 likes
    4. Tavis Ormandy‏Verified account @taviso 6 Dec 2019
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      Replying to @0xMatt @svblxyz

      Yep, they absolutely should just regenerate it. That said, not sure that's worth the ridicule they're getting!

      3 replies 0 retweets 7 likes
    5. Fourteen macaws in a trenchcoat‏ @0xMatt 6 Dec 2019
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      Replying to @taviso @svblxyz

      I think the expectation is that a pen-testing company probably should foresee the consequences of such decisions a bit better if they're any good at their jobs. Though, maybe it's because people just love a good public shaming.

      2 replies 1 retweet 1 like
    6. Tavis Ormandy‏Verified account @taviso 6 Dec 2019
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      Replying to @0xMatt @svblxyz

      I dunno, seems to me they thought about it more than people just toeing the line! Their system is better than most, even if we can nitpick some design issues, it really protects password reusers. They're getting more hate than a company that uses raw-md5 😆

      2 replies 1 retweet 7 likes
    7. Sriram Karra‏ @skarra 6 Dec 2019
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      Replying to @taviso @0xMatt @svblxyz

      Their reasoning for the design choice - "support forgot password use case" - is why I doubt they really thought it through...

      1 reply 0 retweets 1 like
    8. Tavis Ormandy‏Verified account @taviso 6 Dec 2019
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      Replying to @skarra @0xMatt @svblxyz

      They should have just had a regenerate password button, it's easier to implement and handles the revocation case as well. That said, is it really that bad? There's room for improvement, but this protects password reusers better than a typical system, no?🤷🏻‍♂️

      4 replies 0 retweets 3 likes
      Tavis Ormandy‏Verified account @taviso 6 Dec 2019
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      Replying to @taviso @skarra and

      I think if they had used a salted hash and asked for a password, nobody would care, but that's literally worse than this system, right? If you're a password reuser, this system is safer. If you're not, then who cares what they do with their passwords? 🤔

      8:16 AM - 6 Dec 2019
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      1 reply 0 retweets 1 like
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        2. Sriram Karra‏ @skarra 6 Dec 2019
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          Replying to @taviso @0xMatt @svblxyz

          This safeguards against "inbound reuse", yes. But outbound reuse is not in their control, right? Something like: "This new website is asking for a crazy password, and I have this sticky note for that other website already on my monitor, so let me reuse it"

          1 reply 0 retweets 0 likes
        3. Sriram Karra‏ @skarra 6 Dec 2019
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          Replying to @skarra @taviso and

          But I think we can all agree they got more flak than they deserved.

          0 replies 0 retweets 0 likes
        4. End of conversation

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