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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 17 Feb 2016
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      I made 1 final update to the Apple vs FBI post, clarifying that Apple can update the SE and what that meanshttps://blog.trailofbits.com/2016/02/17/apple-can-comply-with-the-fbi-court-order/ …

      13 replies 151 retweets 144 likes
    2. Dan Guido‏ @dguido 17 Feb 2016
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      Replying to @_snagg

      @_snagg That they can update the firmware on the SE? That was news to me, and shocking.

      1 reply 3 retweets 3 likes
    3. Andrea Barisani‏Verified account @AndreaBarisani 18 Feb 2016
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      Replying to @dguido

      @dguido @_snagg I think what really matters is separation of responsibilities between the SE fw and its hardcoded ROM, just like smartcards

      2 replies 1 retweet 2 likes
    4. Dan Guido‏ @dguido 18 Feb 2016
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      Replying to @AndreaBarisani

      @AndreaBarisani @_snagg If the passcode delay is in sw, that is enough for major gains in attack efficiency. They changed it before.

      1 reply 0 retweets 0 likes
    5. Andrea Barisani‏Verified account @AndreaBarisani 18 Feb 2016
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      Replying to @dguido

      @dguido @_snagg agreed, but what about wiping or min hardcoded timing values? I am just not sure until we test the SE ideally :)

      2 replies 0 retweets 0 likes
      Dan Guido‏ @dguido 18 Feb 2016
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      Replying to @AndreaBarisani

      @AndreaBarisani @_snagg I was stuck on this too, it's nearly impossible to test w/ my tools. I can deduce functionality on observed behavior

      12:29 AM - 18 Feb 2016
      2 replies 0 retweets 0 likes
        1. New conversation
        1. Dan Guido‏ @dguido 18 Feb 2016
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          Replying to @dguido

          @AndreaBarisani @_snagg ...and get off the record conversations from people in the know, but other options are limited.

          1 reply 0 retweets 0 likes
        2. Andrea Barisani‏Verified account @AndreaBarisani 18 Feb 2016
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          Replying to @dguido

          @dguido @_snagg yeah I understand, do you know if SE fw is loaded at each boot onto it or just flashed on updates? Does SE verify it or iOS?

          2 replies 0 retweets 0 likes
        3. 2 more replies
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        1. Jeff McJunkin‏ @jeffmcjunkin 23 Feb 2016
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          Replying to @dguido

          @dguido @AndreaBarisani @_snagg Do you have any other written observations or sources about Apple's ability to update the SE?

          1 reply 0 retweets 0 likes
        2. Dan Guido‏ @dguido 24 Feb 2016
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          Replying to @jeffmcjunkin

          @jeffmcjunkin @AndreaBarisani @_snagg they can update it, says so in my blog

          1 reply 0 retweets 1 like
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