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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. CopperheadOS‏ @CopperheadOS 1 Jul 2016
      • Report Tweet
      • Report NetzDG Violation

      .@dangoodin001 In regards to http://arstechnica.com/security/2016/07/androids-full-disk-encryption-just-got-much-weaker-heres-why/ …, it's only the OEM / OS vendor with the signing keys. Google only has those for Nexus.

      2 replies 3 retweets 12 likes
    2. Dan Guido‏ @dguido 1 Jul 2016
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      Replying to @CopperheadOS @dangoodin001

      you have to trust more than 1 company with device security (yes), FDE key is stored in software (yes). LGTM.

      2 replies 0 retweets 0 likes
    3. CopperheadOS‏ @CopperheadOS 1 Jul 2016
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      Replying to @dguido @dangoodin001

      Google doesn't have the keys. Qualcomm doesn't have the keys. There is no second party able to flash firmware or OS.

      2 replies 0 retweets 0 likes
    4. Dan Guido‏ @dguido 1 Jul 2016
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      Replying to @CopperheadOS @dangoodin001

      As I said, people frequently assume that Google is in control. They're not. It's the OEM. This is news to many.

      1 reply 0 retweets 1 like
    5. CopperheadOS‏ @CopperheadOS 1 Jul 2016
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      Replying to @dguido @dangoodin001

      Yes, and that assumption should be corrected, but not by spreading another misunderstanding that also isn't correct.

      1 reply 0 retweets 0 likes
    6. Dan Guido‏ @dguido 1 Jul 2016
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      Replying to @CopperheadOS @dangoodin001

      "Since the key is available to TrustZone, the hardware makers can simply create and sign a TrustZone image"

      2 replies 0 retweets 0 likes
    7. CopperheadOS‏ @CopperheadOS 1 Jul 2016
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      Replying to @dguido @dangoodin001

      The article claims Google has access, which isn't true, and it implies that Qualcomm might have access - they don't.

      1 reply 0 retweets 0 likes
    8. Dan Guido‏ @dguido 1 Jul 2016
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      Replying to @CopperheadOS @dangoodin001

      It does not imply Qualcomm has access.

      1 reply 0 retweets 0 likes
      Dan Guido‏ @dguido 1 Jul 2016
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      Replying to @dguido @CopperheadOS @dangoodin001

      It explicitly says that Qualcomm does not have access.

      6:19 PM - 1 Jul 2016
      1 reply 0 retweets 0 likes
        1. New conversation
        1. CopperheadOS‏ @CopperheadOS 1 Jul 2016
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          Replying to @dguido @dangoodin001

          The article doesn't do that. It presents a claim that it does, and then in parentheses notes Qualcomm disagrees.

          2 replies 0 retweets 0 likes
        2. Dan Guido‏ @dguido 1 Jul 2016
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          Replying to @CopperheadOS @dangoodin001

          Ok, so then Dan Goodin did his job in reporting that discrepancy, yes?

          1 reply 0 retweets 1 like
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