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dguido's profile
Dan Guido
Dan Guido
Dan Guido
@dguido

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Dan Guido

@dguido

CEO @trailofbits, organizer @EmpireHacking, director @hack_secure. Open DMs.

Brooklyn, NY
trailofbits.com
Joined April 2008

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    1. Bernhard Mueller‏ @muellerberndt Jul 9

      Bernhard Mueller Retweeted Panvala

      Systems that rely on trusted authorities can be compromised with low cost (case in point: SSL/TLS). Panvala solves this problem by decentralizing trust through a token-curated registry.https://twitter.com/PanvalaMark/status/1016337610787180545 …

      Bernhard Mueller added,

      Panvala @PanvalaMark
      Panvala is a decentralized system that helps participants mark smart contracts that are safer than others. https://medium.com/panvala/introducing-panvala-8cb9db97c316 …
      Show this thread
      1 reply 0 retweets 4 likes
      Dan Guido‏ @dguido Jul 9
      Replying to @muellerberndt

      This pushes a HUGE amount of risk onto security reviewers and away from the contract owners. Won't people just attack or sue the parties voting in support of contracts when bugs are found later?pic.twitter.com/80u0HHFa9D

      8:42 AM - 9 Jul 2018
      3 replies 0 retweets 0 likes
        1. New conversation
        2. Bernhard Mueller‏ @muellerberndt Jul 9
          Replying to @dguido

          The Panvala mark means that a majority of participants agree that certain standards have been followed. It's the task of the community to ensure that the standards are sufficient to prevent bugs (e.g. cross checking audit-reports).

          1 reply 0 retweets 0 likes
        3. Bernhard Mueller‏ @muellerberndt Jul 9
          Replying to @muellerberndt @dguido

          But as we all know, there's never a 100% guarantee. The TCR reflects the opinion of the security community as a whole (hopefully including @TrailofBits). Consumer reports is a good analogy.

          2 replies 0 retweets 1 like
        4. Bernhard Mueller‏ @muellerberndt Jul 9
          Replying to @muellerberndt @dguido @trailofbits

          The legal aspects are certainly important. But that's true for companies that do security audits anyway.

          1 reply 0 retweets 1 like
        5. Dan Guido‏ @dguido Jul 9
          Replying to @muellerberndt @trailofbits

          None of our reports say, "This contract is safe to use." The vast majority of our reports never reach the internet, and for good reason. They intended audience are engineering teams, not the public. The contract owners should stand behind their code, not me.

          0 replies 0 retweets 1 like
        6. End of conversation
        1. New conversation
        2. Niran Babalola‏ @niran Jul 9
          Replying to @dguido @muellerberndt

          By that standard, no one should be giving opinions about the safety of any smart contract. We put in this work so people can actually use these systems with more confidence. But there are no guarantees here.

          1 reply 0 retweets 0 likes
        3. Dan Guido‏ @dguido Jul 9
          Replying to @niran @muellerberndt

          You just made my point. If there are "no guarantees" then maybe you should not be posting a guarantee on Panvala?

          1 reply 0 retweets 0 likes
        4. Niran Babalola‏ @niran Jul 9
          Replying to @dguido @muellerberndt

          Panvala does not guarantee smart contracts. Consumer Reports doesn't guarantee consumer products. Publishing opinions about which stuff to use is a valuable public service, and I think the community can do it well together.

          1 reply 0 retweets 0 likes
        5. Dan Guido‏ @dguido Jul 9
          Replying to @niran @muellerberndt

          People are going to use Panvala, not engineers, and the coarse-grained UI won't inform accurate opinions about testing results. E.g., a part of the code with a flaw could have been out of scope for your assessment but the reviewer will still be seen as at fault.pic.twitter.com/omJlGSCmYG

          1 reply 0 retweets 0 likes
        6. Dan Guido‏ @dguido Jul 9
          Replying to @dguido @niran @muellerberndt

          I also want to provide transparency to engineers and end-users but this looks like it too easily transfers risk from owners to auditors, and sets us up as "fall guys."

          1 reply 0 retweets 0 likes
        7. Niran Babalola‏ @niran Jul 9
          Replying to @dguido @muellerberndt

          This is a good point that we'll have to be vigilant about. Users will never read fine-grained audit reports. They need coarse signals that help them make decisions. I hope that with your input, we can avoid creating new problems that set us all back instead of moving us forward.

          0 replies 0 retweets 0 likes
        8. End of conversation
        1. Dan Guido‏ @dguido Jul 9
          Replying to @dguido @muellerberndt

          Dan Guido Retweeted Elizabeth Wharton

          Case in pointhttps://twitter.com/LawyerLiz/status/1016345253232726018 …

          Dan Guido added,

          Elizabeth Wharton @LawyerLiz
          Liability for #Vuln Assessments? - Insurers sue Trustwave, claim failed to detect malware & failed to note mult. PCI compliance issues, giving clean rpts w/ #Heartland https://twitter.com/andrewsmhay/status/1016338837335756801 …
          0 replies 0 retweets 1 like
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