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delroth_'s profile
Pierre Bourdon
Pierre Bourdon
Pierre Bourdon
@delroth_

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Pierre Bourdon

@delroth_

Reverse engineer, Dolphin Emulator developer and maintainer. Infrastructure security engineer @ $employer.

Zürich, Switzerland
delroth.net
Joined July 2009

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    1. Hector Martin‏ @marcan42 27 Sep 2016
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      Tesla only implemented code-signed updates *now*? WTF? What is this, the 90s? https://www.wired.com/2016/09/tesla-responds-chinese-hack-major-security-upgrade/ …pic.twitter.com/QSzceZoGgB

      7 replies 51 retweets 63 likes
    2. Graham Sutherland (Polynomial^DSS)‏ @gsuberland 27 Sep 2016
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      Replying to @marcan42

      To be slightly fairer to them, my understanding is that they pulled updates over TLS.

      2 replies 0 retweets 1 like
    3. Hector Martin‏ @marcan42 27 Sep 2016
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      Replying to @gsuberland

      Transport security != codesigning. Completely unrelated things.

      1 reply 0 retweets 2 likes
    4. Graham Sutherland (Polynomial^DSS)‏ @gsuberland 27 Sep 2016
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      Replying to @marcan42

      I'm aware of that, obviously, but my point is that most attack vectors are going to be focusing on MitM'ing the OTA updates.

      2 replies 0 retweets 1 like
    5. Hector Martin‏ @marcan42 27 Sep 2016
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      Replying to @gsuberland

      I disagree. Most attack vectors are going to be focusing on any random entry point, and without codesigning, you then push FW.

      2 replies 0 retweets 2 likes
    6. Graham Sutherland (Polynomial^DSS)‏ @gsuberland 27 Sep 2016
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      Replying to @marcan42

      Either way it's irrelevant. I'm just saying that we're not likely to see mass bricking/pwning of Teslas via rogue femtocell.

      1 reply 0 retweets 1 like
    7. Tim Brown‏ @timb_machine 27 Sep 2016
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      Replying to @gsuberland

      Key bit is /mass/, if you're unfortunate enough to be a target OTOH...

      1 reply 0 retweets 0 likes
    8. Graham Sutherland (Polynomial^DSS)‏ @gsuberland 27 Sep 2016
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      Replying to @timb_machine

      Yup. As I say, they really should be signing (and it looks like they have released a patch to do so) but at least it's limited

      1 reply 0 retweets 0 likes
    9. Graham Sutherland (Polynomial^DSS)‏ @gsuberland 27 Sep 2016
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      Replying to @gsuberland @timb_machine

      ...to local targeted attacks, rather than just everyone within transmission range of some twat with an antenna.

      1 reply 0 retweets 0 likes
      Pierre Bourdon‏ @delroth_ 27 Sep 2016
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      Replying to @gsuberland

      yeah, except if you find a remote exploit through something that's not TLS, and then you can rewrite FW with anything you want.

      9:04 AM - 27 Sep 2016
      1 reply 0 retweets 1 like
        1. Graham Sutherland (Polynomial^DSS)‏ @gsuberland 27 Sep 2016
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          Replying to @delroth_

          Again, not saying they shouldn't sign firmware. Saying it's good that they at least use TLS.

          0 replies 0 retweets 0 likes
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