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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. Dan Guido‏ @dguido 9 Mar 2017
      Replying to @dguido

      Defensive efforts to patch vulnerabilities have little effect on exploits. They usually die from unrelated code churn.pic.twitter.com/cVZRZwrVzQ

      3 replies 9 retweets 15 likes
    2. Dan Guido‏ @dguido 9 Mar 2017
      Replying to @dguido

      Many eyes (and open source) DO NOT make all bugs shallow. Linux among the highest life expectancy for exploits.pic.twitter.com/ILOUTqoPVi

      4 replies 58 retweets 67 likes
    3. Dan Guido‏ @dguido 9 Mar 2017
      Replying to @dguido

      AGAIN: efforts to patch or disclose your way to killing exploits don't work (*cough* Project Zero). Most die from code refactors.pic.twitter.com/tXF5rFI98J

      7 replies 39 retweets 45 likes
    4. Dan Guido‏ @dguido 9 Mar 2017
      Replying to @dguido

      If an exploit does get rediscovered, it gets rediscovered quickly... or not really at all.pic.twitter.com/nf7GfZ1dAP

      1 reply 14 retweets 19 likes
    5. Dan Guido‏ @dguido 9 Mar 2017
      Replying to @dguido

      Exploit buyers overwhelmingly purchase in response to direct, operational needs.pic.twitter.com/UNGL8wnC0K

      1 reply 9 retweets 8 likes
    6. Dan Guido‏ @dguido 9 Mar 2017
      Replying to @dguido

      Crowdsourcing vulns is insufficient. Strategic guidance on architecture, mitigations is essential for good defense.pic.twitter.com/MqEnhZdPw0

      2 replies 15 retweets 9 likes
    7. Dan Guido‏ @dguido 9 Mar 2017
      Replying to @dguido

      "Offensively focused researchers employ different methods of finding bugs than defensively focused ones." Hire a red team!pic.twitter.com/E4VkYMXEnf

      1 reply 17 retweets 16 likes
    8. Dan Guido‏ @dguido 9 Mar 2017
      Replying to @dguido

      Selecting the RIGHT vulnerability appears to be the most time consuming part of exploit development.pic.twitter.com/yZ63tjrCQ8

      1 reply 6 retweets 8 likes
    9. Dan Guido‏ @dguido 9 Mar 2017
      Replying to @dguido

      As an exploit developer, you're having a GREAT year if you ship 4 exploits.pic.twitter.com/iOKN5qpT53

      1 reply 20 retweets 22 likes
    10. Dan Guido‏ @dguido 9 Mar 2017
      Replying to @dguido

      Good bugs tend to cluster together.pic.twitter.com/uLIkPM0ql2

      2 replies 11 retweets 7 likes
      Dan Guido‏ @dguido 9 Mar 2017

      Dan Guido Retweeted Ryan Stortz

      Bounties have little overlap w exploit development. Not in skill required, techniques developed, or bugs discovered.https://twitter.com/withzombies/status/839870870545850368 …

      Dan Guido added,

      Ryan Stortz @withzombies
      🔥 pic.twitter.com/edUOweLXMt
      8:42 AM - 9 Mar 2017
      • 9 Retweets
      • 6 Likes
      • Ryan Speers Altytwo Altryness, BS Echelon-H Josh Pitts Kevin Riggle Owen Redwood Vercovicium Onur Alanbel argp
      3 replies 9 retweets 6 likes
        1. New conversation
        2. Dan Guido‏ @dguido 9 Mar 2017
          Replying to @dguido

          Extraordinarily few people are capable of professional exploit development, an order of magnitude less than the number of bug bounty hunterspic.twitter.com/G1rD45w0xz

          3 replies 18 retweets 15 likes
        3. Dan Guido‏ @dguido 9 Mar 2017
          Replying to @dguido

          To those dismissing this RAND report: Ignore it at your own peril. This is the best data ever released on real exploit development, period.

          2 replies 16 retweets 34 likes
        4. daveaitel‏ @daveaitel 9 Mar 2017
          Replying to @dguido

          who is dismissing it?

          2 replies 0 retweets 0 likes
        5. Ryan Duff‏ @flyryan 9 Mar 2017
          Replying to @daveaitel @dguido

          I’ve seen several people take issue with it. @taviso being one of them. (I think it’s excellent, IMO).

          1 reply 0 retweets 0 likes
        6. Tavis Ormandy‏Verified account @taviso 9 Mar 2017
          Replying to @flyryan @daveaitel @dguido

          I think you must be thinking of @halvarflake, I'm not involved.

          2 replies 0 retweets 1 like
        7. Ryan Duff‏ @flyryan 9 Mar 2017
          Replying to @taviso @daveaitel and

          Didn’t you mention something about Full Disclosure?

          1 reply 0 retweets 0 likes
        8. Tavis Ormandy‏Verified account @taviso 9 Mar 2017
          Replying to @flyryan @daveaitel and

          Unrelated.

          1 reply 0 retweets 0 likes
        9. halvarflake‏ @halvarflake 9 Mar 2017
          Replying to @taviso @flyryan and

          what is this thread and how did I get here? ;)

          2 replies 0 retweets 3 likes
        10. 1 more reply
        1. New conversation
        2. Aristotle Tzafalias‏ @Aristot73 9 Mar 2017
          Replying to @dguido

          does that mean that increased demand for exploits by intel & LE worldwide would not affect the bug bounty market economics? @k8em0

          1 reply 0 retweets 0 likes
        3. Dan Guido‏ @dguido 9 Mar 2017
          Replying to @Aristot73 @k8em0

          According to the data in this report, bug bounties have little to no impact on the day to day lives of pro exploit devs.

          3 replies 1 retweet 2 likes
        4. Aristotle Tzafalias‏ @Aristot73 9 Mar 2017
          Replying to @dguido @k8em0

          so exploit markets and bug bounties do not compete for talent in the same pool?

          1 reply 0 retweets 0 likes
        5. Dan Guido‏ @dguido 9 Mar 2017
          Replying to @Aristot73 @k8em0

          It is strongly implied that they do not overlap for BUSBY, the subject of the study.

          1 reply 0 retweets 2 likes
        6. End of conversation
        1. New conversation
        2. Porkus Bellius III‏ @porkbellyfuture 9 Mar 2017
          Replying to @dguido

          That's a pretty huge claim. Is it over-generalized? Occasionally very good bugs come through bounty programs...

          1 reply 0 retweets 0 likes
        3. Porkus Bellius III‏ @porkbellyfuture 9 Mar 2017
          Replying to @porkbellyfuture @dguido

          Even if it is a tiny percentage of bounty submissions, it can be a sizable proportion of bugs that are interesting to exploit devs

          1 reply 0 retweets 0 likes
        4. 0xdeadbeefJERKY  ☠️‏ @0xdeadbeefJERKY 9 Mar 2017
          Replying to @porkbellyfuture @dguido

          I believe the focus here is the level of expertise required for respectable exploit development

          1 reply 0 retweets 0 likes
        5. 0xdeadbeefJERKY  ☠️‏ @0xdeadbeefJERKY 9 Mar 2017
          Replying to @0xdeadbeefJERKY @porkbellyfuture @dguido

          Not necessarily the perceived interest of submitted bugs by exploit developers.

          1 reply 0 retweets 0 likes
        6. Porkus Bellius III‏ @porkbellyfuture 9 Mar 2017
          Replying to @0xdeadbeefJERKY @dguido

          For skill and techniques, sure, big divergence, but little overlap in bugs implies bounties have near zero value

          1 reply 0 retweets 0 likes
        7. 0xdeadbeefJERKY  ☠️‏ @0xdeadbeefJERKY 9 Mar 2017
          Replying to @porkbellyfuture @dguido

          IMHO there's no correlation being drawn here to the value of bug bounties at all. Nobody is denying their value.

          0 replies 0 retweets 0 likes
        8. End of conversation

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