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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. Philippe Castonguay‏ @PhABCD 11 Oct 2019
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      Replying to @DepiancePodcast @fubuloubu and

      Let's assume it is covered yes, though it seems to me like if it's not covered then they are back to wearing the security auditor hat and putting their reputation at risk for not resolving it.

      1 reply 0 retweets 0 likes
    2. Dan Guido‏ @dguido 11 Oct 2019
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      Replying to @PhABCD @fubuloubu and

      Security vendors don’t resolve bugs, we advise on risk. It’s the owners perogative to take risks. If a bug is found after they deploy, that’s on the owner, not on me. I would hope our advice helped address that near inevitably, too, so handling it was quick with little impact.

      1 reply 0 retweets 2 likes
    3. Dan Guido‏ @dguido 11 Oct 2019
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      Replying to @dguido @PhABCD and

      Your doctor can’t control your legs and make you run. It’s not their fault if you don’t listen to every academic study they know could help you. This fantasy that a security vendor is somehow responsible for a client getting hacked is completely wrong.

      1 reply 0 retweets 2 likes
    4. Philippe Castonguay‏ @PhABCD 11 Oct 2019
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      Replying to @dguido @fubuloubu and

      I've never implied that security auditors are responsible for bugs in the code they audit, but it seems clear to me that an auditor that continually fails to report and disclose vulnerabilities that later get exploited will have a hard time finding new clients.

      1 reply 1 retweet 1 like
    5. Dan Guido‏ @dguido 11 Oct 2019
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      Replying to @PhABCD @fubuloubu and

      Maybe, or maybe you only booked 15 minute checkups when you needed a 2hr physical, or you’ve got a rare disease only a special test could find, or new research came out with risk factors no one understood before, or you didn’t like my advice and ignored it, etc.

      2 replies 0 retweets 1 like
    6. Philippe Castonguay‏ @PhABCD 11 Oct 2019
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      Replying to @dguido @fubuloubu and

      Contract auditors have more knowledge about the risks of a system than a doctor could ever have about their patients. If their reports omit overflows that get exploited, it's unlikely people will keep using them. Obscure and rare vulns would likely not affect their reputation.

      1 reply 0 retweets 0 likes
    7. Dan Guido‏ @dguido 11 Oct 2019
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      Replying to @PhABCD @fubuloubu and

      I’m sorry, this simply does not reflect the reality of code reviews we’ve conducted. There are many we’ve done where the constraints, or the design patterns, or the willingness to listen to us leave the code in a state where we’re not sure whether even all simple bugs are fixed.

      1 reply 0 retweets 1 like
    8. Philippe Castonguay‏ @PhABCD 11 Oct 2019
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      Replying to @dguido @fubuloubu and

      Wouldn't that precisely put you in a situation where you *do not* want to provide insurance for these contracts? An insurance company for smart contracts would need their own security team to analyze the risks involved with a contract and price the coverage accordingly, if at all

      1 reply 0 retweets 1 like
    9. Dan Guido‏ @dguido 11 Oct 2019
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      Replying to @PhABCD @fubuloubu and

      Yep, sounds like building an insurance company for smart contracts needs to understand how to measure risk to offer their own policies. Why would you think any different?

      2 replies 0 retweets 1 like
    10. Philippe Castonguay‏ @PhABCD 11 Oct 2019
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      Replying to @dguido @fubuloubu and

      From a business perspective, auditors already evaluate the code, which means it would be cheaper for them to price coverage as their evaluation is subsidized by the revenue from the audit. An insurance company alone only gets revenue from the coverage, not their evaluation.

      1 reply 0 retweets 0 likes
      Dan Guido‏ @dguido 11 Oct 2019
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      Replying to @PhABCD @fubuloubu and

      This has been fun, but there’s a reason the real world doesn’t work like this. Nexus Mutual needs to build the competence to price their own policies. They’re free to use or request data from us, but I refuse to have a stake in it. I’ve made my point. Good night!

      10:01 PM - 11 Oct 2019
      • 2 Likes
      • The DePiance Podcast 🍕 Philippe Castonguay
      1 reply 0 retweets 2 likes
        1. Philippe Castonguay‏ @PhABCD 11 Oct 2019
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          Replying to @dguido @fubuloubu and

          Fair enough! Thank you for sharing your side of the story :).

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