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taviso's profile
Tavis Ormandy
Tavis Ormandy
Tavis Ormandy
Verified account
@taviso

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Tavis OrmandyVerified account

@taviso

Vulnerability researcher at Google. This is a personal stream, opinions expressed are mine.

California
taviso.decsystem.org
Joined April 2008

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    1. Matthew Green‏ @matthew_d_green 23 Jul 2019
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      William Barr gave a talk today at Fordham, on “going dark” and the need for encryption backdoors. A lot of this is old hat. The surprising thing is that it was the only subject of the talk: it seems like the Trump administration is serious about this. (Thread).

      37 replies 496 retweets 749 likes
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    2. Matthew Green‏ @matthew_d_green 23 Jul 2019
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      2. The talk follows the typical pattern of asserting that the Fourth Amendment actually requires encryption backdoors. I’m no lawyer, but this is a hell of a legal theory. I just want to flag that one and move on to the technical.

      5 replies 43 retweets 219 likes
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    3. Matthew Green‏ @matthew_d_green 23 Jul 2019
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      3. Barr cites Mexican cartels as using WhatsApp groups, and then notes that law enforcement is unable to penetrate these groups. This is a bit surprising to me, since WhatsApp group management is one of the weakest areas of the system.

      7 replies 29 retweets 191 likes
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    4. Matthew Green‏ @matthew_d_green 23 Jul 2019
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      4. What’s really fascinating about this speech is how frankly the Trump administration has moved away from “we just want to access your encrypted phone” to making it clear that communications (text messages) etc. are the real goal.

      3 replies 49 retweets 167 likes
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    5. Matthew Green‏ @matthew_d_green 23 Jul 2019
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      5. I have to quote this one because it’s unreal: “For example, providers design their products to allow access for software updates using centrally managed security keys. We know of no instance where encryption has been defeated by compromise of those provider-maintained keys.”

      6 replies 34 retweets 188 likes
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    6. Matthew Green‏ @matthew_d_green 23 Jul 2019
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      6. Is the US Attorney General saying that his department knows of no instance where software update/signing keys were stolen? This is crazy. I can think of one: Stuxnet. But that’s hardly the last one.

      6 replies 53 retweets 279 likes
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      Tavis Ormandy‏Verified account @taviso 23 Jul 2019
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      Replying to @matthew_d_green

      Perhaps a better example would be the SecurID seed data leak?

      9:13 AM - 23 Jul 2019
      • 3 Retweets
      • 18 Likes
      • Terry Darling Bobby Tables Rene Mayrhofer Deirdre Connolly¹ 💫🍕 😷 𝔅𝔦𝔤𝔤𝔦𝔢 𝔖𝔪𝔞𝔩𝔩𝔰 Mark Janssen GF Greybeard paul dot x
      0 replies 3 retweets 18 likes

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