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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 9 Oct 2018
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      Remember when a certain other security researcher was convinced his Ethernet jacks had implants? Remember all this "evidence"? How *we* knew it was BS? Now consider whether Bloomberg's technically clueless journalists would know it's BS.

      3 replies 12 retweets 53 likes
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    2. Hector Martin‏ @marcan42 9 Oct 2018
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      Seriously, this is just pathetic now. They just went from "1 year and multiple sources" to "<5 days and one guy". This is just negligence. https://www.bloomberg.com/news/articles/2018-10-09/new-evidence-of-hacked-supermicro-hardware-found-in-u-s-telecom …

      5 replies 31 retweets 78 likes
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    3. Hector Martin‏ @marcan42 9 Oct 2018
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      Why is it that every time something like this happens nobody has any hard documentation or analysis results? Ah yes, the best cop-out. "We don't have it any more, we can't give you more details".pic.twitter.com/EooD0aIVyR

      4 replies 11 retweets 47 likes
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    4. Hector Martin‏ @marcan42 9 Oct 2018
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      So now we have *software* detecting *analog* stuff like the "power consumption" of a *network*. None of those words go together. At all.pic.twitter.com/h0W0R8cI7L

      6 replies 7 retweets 71 likes
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    5. Hector Martin‏ @marcan42 9 Oct 2018
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      Basically every Ethernet jack I've seen in anything but cheapo consumer routers/switches has been metal. How the hell is this an IOC?pic.twitter.com/1LG7tBe9MW

      4 replies 14 retweets 60 likes
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    6. Hector Martin‏ @marcan42 9 Oct 2018
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      Nevermind that... Ethernet jacks don't have power pins. Where is this module (that uses so much power that it gets hot) magically powering itself from? Nobody runs PoE out to servers. Did they modify the board design to add power pins too?

      6 replies 12 retweets 81 likes
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    7. Daniel Cincunegui  🧢‏ @danielcincu 9 Oct 2018
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      Replying to @marcan42

      Minor nit: power is available for the jack itself since it typically has two LEDs. So if you modified a jack previous to board mounting, you have power. Not enough to need heat dissipation, but enough to run a small chip.

      1 reply 0 retweets 0 likes
    8. Hector Martin‏ @marcan42 9 Oct 2018
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      Replying to @danielcincu

      Not a small chip able to MITM 1000BASE-T. You aren't going to get more than 60mW from an LED.

      2 replies 0 retweets 1 like
    9. Hector Martin‏ @marcan42 9 Oct 2018
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      Replying to @marcan42 @danielcincu

      Just a single 100BASE-TX PHY is twice that, a 1000BASE-T one is like 500mW.

      1 reply 0 retweets 0 likes
    10. Daniel Cincunegui  🧢‏ @danielcincu 9 Oct 2018
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      Replying to @marcan42

      https://goo.gl/images/sZFb7x  Notice the LED pins are totally independent.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 9 Oct 2018
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      Replying to @danielcincu

      Yes, I know how Ethernet jacks work. They're LEDs, not halogen bulbs. You can't pull more than 60mW tops from each of those pairs of pins (while the LED is on), potentially much less depending on the design.

      12:14 PM - 9 Oct 2018
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