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Profil korisnika/ce matthew_d_green
Matthew Green
Matthew Green
Matthew Green
@matthew_d_green

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Matthew Green

@matthew_d_green

I teach cryptography at Johns Hopkins.

Baltimore, MD
blog.cryptographyengineering.com
Vrijeme pridruživanja: siječanj 2010.

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    Matthew Green‏ @matthew_d_green 31. sij
    • Prijavi Tweet

    Matthew Green je proslijedio/a tweet korisnika/ceRiana Pfefferkorn

    I retweeted this post yesterday, but I urge people who care about encryption online to read it, because this legislation should scare you. I am going to follow with a (much less thorough and accurate) summary thread below.https://twitter.com/riana_crypto/status/1222984831602061312 …

    Matthew Green je dodan/na,

    Riana Pfefferkorn @Riana_Crypto
    Bloomberg has just released a draft of the EARN IT Act bill, which goes after end-to-end encryption under the guise of amending Section 230. I just posted a 5200-word blog post about it. https://cyberlaw.stanford.edu/blog/2020/01/earn-it-act-how-ban-end-end-encryption-without-actually-banning-it …
    Prikaži ovu nit
    06:05 - 31. sij 2020.
    • 580 proslijeđenih tweetova
    • 686 oznaka „sviđa mi se”
    • Tad Anderson Michigan Bitcoin PaySatoshi 🔑 Paul's box Daniel Fischer Manoj Kasichainula elitistliterati Rachel Daniel M. Capella
    14 replies 580 proslijeđenih tweetova 686 korisnika označava da im se sviđa
      1. Novi razgovor
      2. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        1. So in case you haven’t been paying attention, there’s been a bit of a struggle going on between law enforcement and the tech industry over encryption. TL;DR: law enforcement doesn’t like it. The FBI even made a website:https://www.fbi.gov/services/operational-technology/going-dark …

        31 proslijeđeni tweet 77 korisnika označava da im se sviđa
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      3. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        2. The problem is that US law makes end-to-end encryption legal. Laws like CALEA require wiretap capability for some providers, but only if they have the decryption kegs. Similarly, providers are exempted from liability for many types of “bad” content.

        7 proslijeđenih tweetova 69 korisnika označava da im se sviđa
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      4. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        3. US law enforcement (and friendly senators) have been trying to change this for a while. Attempts to legislate crypto backdoors have been unsuccessful. Weirdly, people don’t seem to prioritize the government reading their mail.https://www.google.com/amp/s/techcrunch.com/2016/04/13/burr-feinstein-encryption-bill-is-officially-here-in-all-its-scary-glory/amp/ …

        1 reply 18 proslijeđenih tweetova 74 korisnika označavaju da im se sviđa
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      5. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        4. Since demanding backdoors has gone nowhere, US AG William Barr and others recently switched strategies. In an open letter, they demanded that Facebook delay encryption plans because it would hinder filtering of “child sexual abuse material” (CSAM).https://www.justice.gov/opa/pr/attorney-general-barr-signs-letter-facebook-us-uk-and-australian-leaders-regarding-use-end …

        13 proslijeđenih tweetova 62 korisnika označavaju da im se sviđa
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      6. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        5. This filtering already happens in some networks, like Facebook. It involves scanning every (unencrypted) picture and video you send *in real time* to see if it contains child pornography. Any hits are reported to an agency called NCMEC.

        1 reply 10 proslijeđenih tweetova 52 korisnika označavaju da im se sviđa
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      7. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        6. End-to-end encryption disrupts this CSAM scanning process, because, well, let’s be honest, these scanners are a mass surveillance system — one with a specific (well-meaning) intent — and end-to-end encryption is designed to *stop* mass surveillance.

        1 reply 14 proslijeđenih tweetova 73 korisnika označavaju da im se sviđa
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      8. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        7. I am *deeply* skeptical of Barr’s motivation here. After several years of opposing encryption on very different grounds (criminals, terrorists) and asking for access only with a warrant, suddenly making a hard right turn and saying “think about the children” — feels cynical.

        5 replies 22 proslijeđena tweeta 139 korisnika označava da im se sviđa
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      9. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        8. Technically, the request is also a radical new ask. Previously, law enforcement wanted “exceptional access” — meaning only occasionally would they need to decrypt things. But CSAM scanning can’t be “exceptional”. It has to scan every single image you send.

        1 reply 12 proslijeđenih tweetova 76 korisnika označava da im se sviđa
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      10. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        9. All of this has just been a prelude to describing the new proposed legislation @Riana_Crypto discusses. This legislation is being introduced by Senators Graham and Blumenthal, and it reads like a “backdoor” attempt to squash end-to-end encryption. https://cyberlaw.stanford.edu/blog/2020/01/earn-it-act-how-ban-end-end-encryption-without-actually-banning-it …

        12 proslijeđenih tweetova 55 korisnika označava da im se sviđa
        Prikaži ovu nit
      11. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        10. The basic strategy of this law is to make providers (Apple, Facebook, Google etc.) criminally liable for CSAM, unless they comply with a set of “recommended best practices” for detecting the stuff. But who determines those practices, and is encryption one of them?pic.twitter.com/w47LGT2AAJ

        7 proslijeđenih tweetova 56 korisnika označava da im se sviđa
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      12. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        11. In short, the bill establishes an unelected comission, which must consist of “4 law enforcement reps, 4 tech industry reps, 2 reps of child safety organizations, and 2 computer scientists/software engineering experts”. They’ll decide what the best practices are.

        7 proslijeđenih tweetova 53 korisnika označavaju da im se sviđa
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      13. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        12. The commission has to consider privacy and security. But that consideration is all they’re required to do. And even if they do recommend encryption: the AG can just override whatever they decide. And those problems are the tip of the iceberg. https://cyberlaw.stanford.edu/blog/2020/01/earn-it-act-how-ban-end-end-encryption-without-actually-banning-it …

        1 reply 9 proslijeđenih tweetova 58 korisnika označava da im se sviđa
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      14. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        13. This thread has been long and I want to end it on a different note. There are a number of thoughtful people, including notably @alexstamos, who feel that tech providers need to work harder to find ways to square this circle: ie allow encryption and CSAM detection to co-exist.

        4 proslijeđena tweeta 44 korisnika označavaju da im se sviđa
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      15. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        14. It is really hard for me to look at this kind of legislation (and the underlying, constantly shifting law enforcement strategy) and say “yes, these people are working with good intent to solve a problem, let’s make things easier for them.”

        1 reply 13 proslijeđenih tweetova 80 korisnika označava da im se sviđa
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      16. Matthew Green‏ @matthew_d_green 31. sij
        • Prijavi Tweet

        15. “Let’s build encryption systems that are somehow compatible with (currently well-intentioned) mass surveillance, and hand them over to politicians who have displayed no consistent principles in seeking this capability” does not feel like the winning move in this game. //END

        9 replies 52 proslijeđena tweeta 154 korisnika označavaju da im se sviđa
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