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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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    Dan Guido‏ @dguido 16 Feb 2016

    I wrote up an explainer about the San Bernadino iPhone and the FBI federal court order.https://blog.trailofbits.com/2016/02/17/apple-can-comply-with-the-fbi-court-order/ …

    10:45 PM - 16 Feb 2016
    • 145 Retweets
    • 106 Likes
    • Greg Wester Benji Nick Josevski JGM⚡ x.o.ware, inc. Matteo Justin Phillip ((λ()'Dr.ArneBab)) Cammy H
    13 replies 145 retweets 106 likes
      1. New conversation
      2. Dan Guido‏ @dguido 16 Feb 2016
        Replying to @dguido

        Let me know if you find anything wrong with it! I tried to speak more to a lay audience with this one, so it glosses over a few details.

        1 reply 0 retweets 4 likes
      3. John Kelley‏ @JohnHedge 17 Feb 2016
        Replying to @dguido

        @dguido I'm curious as to why do you think updating SPE FW would erase keys?

        1 reply 0 retweets 0 likes
      4. Dan Guido‏ @dguido 17 Feb 2016
        Replying to @JohnHedge

        @JohnHedge nearly 100% certain that's how it works. Do you have info otherwise?

        0 replies 0 retweets 0 likes
      5. End of conversation
      1. New conversation
      2. Robᵉʳᵗ Graham X🅂 Max‏ @ErrataRob 16 Feb 2016
        Replying to @dguido

        @dguido FYI: I couldn't use iTunes to update my iPhone without re-entering my PIN, even though it'd already trusted my PC.

        1 reply 0 retweets 0 likes
      3. Dan Guido‏ @dguido 16 Feb 2016
        Replying to @ErrataRob

        @ErrataRob You may not have been in DFU mode then.

        1 reply 0 retweets 0 likes
      4. Robᵉʳᵗ Graham X🅂 Max‏ @ErrataRob 16 Feb 2016
        Replying to @dguido

        Robᵉʳᵗ Graham X🅂 Max Retweeted Robᵉʳᵗ Graham X🅂 Max

        @dguido Isn't this DFU mode?https://twitter.com/ErrataRob/status/699786965164675072 …

        Robᵉʳᵗ Graham X🅂 Max added,

        Robᵉʳᵗ Graham X🅂 Max @ErrataRob
        Ok I'm trying to DFU my old iPhone 5 to see if it works pic.twitter.com/WZ4zpwgiSc
        3 replies 0 retweets 0 likes
      5. Dan Guido‏ @dguido 16 Feb 2016
        Replying to @ErrataRob

        @ErrataRob I think that's recovery mode, not DFU mode.

        2 replies 0 retweets 1 like
      6. Robᵉʳᵗ Graham X🅂 Max‏ @ErrataRob 16 Feb 2016
        Replying to @dguido

        @dguido bah, so it is. I misread https://support.apple.com/en-us/HT201263 

        1 reply 1 retweet 2 likes
      7. Rosyna Keller‏ @rosyna 16 Feb 2016
        Replying to @ErrataRob

        @ErrataRob DFU mode bypasses the OS and most fitme are, one reason it can be used to recover from the 1970 date bug. Recovery mode doesn't.

        0 replies 1 retweet 0 likes
      8. End of conversation
      1. u ı ɐ ɯ ø ɹ‏ @_refocus 17 Feb 2016
        Replying to @dguido

        @dguido ICYMI - Communication from Apple on this topic: A Message to Our Customers: http://www.apple.com/customer-letter/ …

        0 replies 1 retweet 0 likes
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      1. New conversation
      2. Rosyna Keller‏ @rosyna 16 Feb 2016
        Replying to @dguido

        @dguido @geekable would it be possible to clarify it's based on the facts on paper, not on guessing the FBI's intent? (I'm seeing confusion)

        1 reply 0 retweets 0 likes
      3. Rosyna Keller‏ @rosyna 16 Feb 2016
        Replying to @rosyna

        @dguido @geekable Namely, it's unclear what the FBI's final motive is. They have access to the texts and iCloud data already in their hands.

        0 replies 1 retweet 0 likes
      4. End of conversation
      1. Red Shirt #2‏ @Red_Shirt_no2 17 Feb 2016
        Replying to @dguido

        @dguido @ageis Looking forward... Can Apple update the SE fw OTA?

        0 replies 0 retweets 0 likes
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      1. Sam Gross‏ @SamTheGeek 17 Feb 2016
        Replying to @dguido

        @dguido @geekable Does DFU mode not wipe the recovery keys? (Recovery Mode, however, does not)

        0 replies 0 retweets 0 likes
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      1. Nicolás Álvarez‏ @nicolas09F9 17 Feb 2016
        Replying to @dguido

        @dguido is it possible to securely make the custom firmware run only on the intended device? Apple says no, your article doesn't say

        0 replies 0 retweets 0 likes
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      1. New conversation
      2. Kirils Solovjovs‏ @KirilsSolovjovs 17 Feb 2016
        Replying to @dguido

        @dguido @rmhrisk Is there anything to stop Apple from suspending the key wipe when updating SE firmware?

        1 reply 0 retweets 0 likes
      3. Nicolás Álvarez‏ @nicolas09F9 17 Feb 2016
        Replying to @KirilsSolovjovs

        @KirilsSolovjovs @dguido does it matter? This device in particular has no SE, as explained later in Dan's article

        1 reply 0 retweets 0 likes
      4. Kirils Solovjovs‏ @KirilsSolovjovs 17 Feb 2016
        Replying to @nicolas09F9

        @nicolas09F9 @dguido Yes, it does. The fight is not about THE device. It's a matter of PRINCIPLE. What about other devices the FBI has?

        0 replies 0 retweets 0 likes
      5. End of conversation
      1. Burgess‏ @chrisjburgess 17 Feb 2016
        Replying to @dguido

        @dguido brilliant read. #FBiOS is genius!

        0 replies 0 retweets 0 likes
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      1. Roman‏ @naumenko_roman 17 Feb 2016
        Replying to @dguido

        @dguido @natashenka This is so cute: passcode, pins, enclaves They need to ask verizon/comcast/nsa sysadmins to check access logs

        0 replies 0 retweets 0 likes
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