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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. Ian Coldwater  📦 💥‏ @IanColdwater 19 Jul 2019
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      Ian Coldwater  📦 💥 Retweeted Quanta Magazine

      People who are more cryptography-literate than I am: is this a real thing? My immediate inclination is to be skeptical of anything claiming to be hacker-proof, but I don't have the math skills to back it uphttps://twitter.com/QuantaMagazine/status/1152299326481358849 …

      Ian Coldwater  📦 💥 added,

      Quanta MagazineVerified account @QuantaMagazine
      Bugs leave software vulnerable to attack. By treating code like a mathematical formula and proving that it’s bug-free, researchers have removed this threat. https://www.quantamagazine.org/how-the-evercrypt-library-creates-hacker-proof-cryptography-20190402/ …
      68 replies 7 retweets 76 likes
    2. Kenn White‏Verified account @kennwhite 19 Jul 2019
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      Replying to @IanColdwater

      formal methods verification is no panacea (and that headline is hype), but its v useful in designing & testing crypto state machines and things like parsing network payloads & handshakes (X.509, ASN.1, ECDH). Orgs like @galois & @trailofbits have done critical applied work here.

      1 reply 0 retweets 27 likes
    3. Kenn White‏Verified account @kennwhite 19 Jul 2019
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      Replying to @kennwhite @IanColdwater and

      See, e.g. https://www.darpa.mil/program/high-assurance-cyber-military-systems …

      1 reply 0 retweets 2 likes
    4. Dan Guido‏ @dguido 19 Jul 2019
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      Replying to @kennwhite @IanColdwater and

      Regardless of whether the spec or the verification technique is perfect, verifying code dramatically reduces the scope of what can go wrong and makes a manual review that much more effective. I'm not sure why the industrial security community has been a frequent naysayer.

      4 replies 0 retweets 17 likes
      Dan Guido‏ @dguido 19 Jul 2019
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      Replying to @dguido @kennwhite and

      We use verification techniques @trailofbits to eliminate categories of flaws + more efficiently focus our time on logical or more abstract risks. Verifying code also necessitates conversations with developers about their intent, sometimes the single most important outcome.

      2:50 PM - 19 Jul 2019
      • 7 Likes
      • Alastair Albert Lunde Richard Johnson Stephen Judkins Sindarina, Mythical Bus Driver Natanael, tech janitor Adrian Rueegsegger
      1 reply 0 retweets 7 likes
        1. Dan Guido‏ @dguido 19 Jul 2019
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          Replying to @dguido @kennwhite and

          Being forced to write out the critical security properties for your code in a machine-parseable format, then using a tool to watch your back for failures of them is never a bad thing!

          0 replies 1 retweet 13 likes
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