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Profil korisnika/ce random_walker
Arvind Narayanan
Arvind Narayanan
Arvind Narayanan
Ovjeren akaunt
@random_walker

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Arvind NarayananOvjeren akaunt

@random_walker

Princeton prof. I use Twitter to share my research & commentary on surveillance capitalism, infosec, cryptocurrencies, AI ethics, tech policy, & academic life.

Princeton, NJ
cs.princeton.edu/~arvindn/
Vrijeme pridruživanja: prosinac 2007.

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    Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
    • Prijavi Tweet

    When we watch TV, our TVs watch us back and track our habits. This practice has exploded recently since it hasn’t faced much public scrutiny. But in the last few days, not one but *three* papers have dropped that uncover the extent of tracking on TVs. Let me tell you about them.

    06:08 - 27. ruj 2019.
    • 4.470 proslijeđenih tweetova
    • 6.318 oznaka „sviđa mi se”
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    119 replies 4.470 proslijeđenih tweetova 6.318 korisnika označava da im se sviđa
      1. Novi razgovor
      2. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        The first paper looked at Roku and Amazon Fire TV. These platforms let you subscribe to “channels”, which are basically apps. As you can guess, they are loaded with trackers. Doubleclick alone is on 97.5% of Roku channels. https://tv-watches-you.princeton.edu/tv-tracking-acm-ccs19.pdf …pic.twitter.com/gGphX2sPwd

        11 replies 240 proslijeđenih tweetova 609 korisnika označava da im se sviđa
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      3. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        There are some channels with over 50 trackers. Also, the majority of trackers were able to grab a unique ID such as MAC address. A few channels leaked email addresses to trackers and many leaked video titles⁠—often unencrypted, so your viewing history is exposed on the network.pic.twitter.com/wPMP7suWFS

        1 reply 153 proslijeđena tweeta 464 korisnika označavaju da im se sviđa
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      4. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        Reverse engineering is hard. The paper was possible due to the hard work and ingenuity of the five PhD/postdoc authors Hooman Moghaddam, Gunes Acar, @baburges, @aruneshmathur, and @danny_y_huang. The other authors are @feamster, @EdFelten, @prateekmittal_, and me.

        1 reply 65 proslijeđenih tweetova 641 korisnik označava da mu se sviđa
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      5. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        The most technically challenging part of the paper was building a bot to automatically install thousands of channels, launch each channel, navigate to a video, watch it until encountering an ad, and collect data on everything that happens behind the scenes.pic.twitter.com/27z2JU5fHe

        63 proslijeđena tweeta 497 korisnika označava da im se sviđa
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      6. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        Here’s a doozy: Roku has a “Limit Ad Tracking” option. Turning it on increased the number of tracking servers contacted 🙃 It did prevent Roku’s AD ID from being leaked, but a whole bunch of other unique IDs are available. Even Pi-hole wasn’t that effective at limiting tracking.

        12 replies 251 proslijeđeni tweet 891 korisnik označava da mu se sviđa
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      7. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        The second paper is by researchers at Northeastern University and Imperial College London. They have an impresive testing setup! https://moniotrlab.ccis.neu.edu/wp-content/uploads/2019/09/ren-imc19.pdf … Here’s a thread from one of the authors: https://twitter.com/proffnes/status/1174255273042743297 …pic.twitter.com/xcYKEXG0kC

        72 proslijeđena tweeta 389 korisnika označava da im se sviđa
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      8. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        They analyzed 81 IoT devices including five smart TVs. Their method was quite different from ours: they did controlled experiments. This is powerful: for example, they can test if devices phone home when someone starts talking or moving. Good news: none of the TVs did. Bad news:pic.twitter.com/NGm9ex9kvC

        9 replies 397 proslijeđenih tweetova 819 korisnika označava da im se sviđa
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      9. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        Some of their findings are what you’d intuitively expect: devices made by Chinese companies tend to talk to Chinese servers. Others findings are more surprising: Nearly all TVs they tested contacted Netflix, even though they never configured any TV with a Netflix account (?!?!)

        5 replies 160 proslijeđenih tweetova 618 korisnika označava da im se sviđa
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      10. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        The third paper is from my colleagues @danny_y_huang Noah Apthorpe Gunes Acar @frankli714 @feamster (I wasn't involved). They built software called IoT Inspector that lets you examine your own IoT devices and, in exchange, contribute data for research. https://iot-inspector.princeton.edu/ 

        118 proslijeđenih tweetova 516 korisnika označava da im se sviđa
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      11. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        Arvind Narayanan je proslijedio/a tweet korisnika/ceArvind Narayanan

        It’s a really neat tool that I’ve tweeted before. Over 4,300 people have installed it and the team has just released their first set of findings using data on 45,000 devices, including nearly a thousand TVs from 19 vendors. https://arxiv.org/pdf/1909.09848.pdf …https://twitter.com/random_walker/status/1116674411862556672 …

        Arvind Narayanan je dodan/na,

        Arvind NarayananOvjeren akaunt @random_walker
        My colleagues have released a neat tool you can use to monitor — and be creeped out by — your "smart" devices https://iot-inspector.princeton.edu/  @kashhill found her coffee pot sending data to Microsoft and her Echo connecting to 17 different domains every few minutes when *not* being used. https://twitter.com/kashhill/status/1116018130084433920 …
        91 proslijeđeni tweet 385 korisnika označava da im se sviđa
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      12. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        (By the way, what I love love love about the three papers released near-simultaneously is that we now have three different ways to interrogate Smart TVs and IoT devices. It bodes well for future efforts to uncover tracking and surveillance in our homes.)

        71 proslijeđeni tweet 476 korisnika označava da im se sviđa
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      13. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        IoT inspector’s findings on TV tracking are consistent with the other 2 papers. In their sample, they find about half the TVs talked to tracking services (the authors tell me they think this is an undercount because many of the TVs were turned on only briefly during the study).

        40 proslijeđenih tweetova 231 korisnik označava da mu se sviđa
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      14. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        One creepy finding in this study is that some TVs connect to Automatic Content Recognition services. ACR involves sending a “fingerprint” of your screen contents to a server, say once a second, for a Shazam-like algorithm to figure out what you’re watching to serve you ads.

        9 replies 178 proslijeđenih tweetova 393 korisnika označavaju da im se sviđa
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      15. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        OK, so our TVs are watching us. Is that so bad? Well, TVs are going down the same road that turned the web & smartphone apps into a cesspit of surveillance. I worry that things like TVs ads emitting ultrasonic beacons for analytics will become more common. https://arstechnica.com/information-technology/2017/05/theres-a-spike-in-android-apps-that-covertly-listen-for-inaudible-sounds-in-ads/ …pic.twitter.com/jWD3rv0T0O

        9 replies 196 proslijeđenih tweetova 504 korisnika označavaju da im se sviđa
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      16. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        It’s unfortunate that TV platforms are turning to targeted ads as the main way to make money. To maximize revenue, they will likely turn to data mining and algorithmic personalization/persuasion to keep people glued to the screen as long as possible.https://digiday.com/media/rokus-advertising-business-outpacing-hardware-business/ …

        90 proslijeđenih tweetova 319 korisnika označava da im se sviđa
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      17. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        Unlike web tracking, our ability to control tracking on TVs is also limited, because TVs are closed platforms and there is no analog of browser extensions. And, in a familiar story, the law and regulations are easily worked around. https://www.washingtonpost.com/technology/2019/09/18/you-watch-tv-your-tv-watches-back/ …pic.twitter.com/X442obQrHj

        5 replies 87 proslijeđenih tweetova 319 korisnika označava da im se sviđa
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      18. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        I'm sorry to leave this thread without a satisfying conclusion. It's not obvious what's the most effective way to push back against privacy intrusions in our homes. I think more awareness is a necessary first step, and I see the recent papers as progress. I hope more will follow.

        12 replies 39 proslijeđenih tweetova 329 korisnika označava da im se sviđa
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      19. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        There are steps we can take. Stay away from vendors whose business model is targeted ads. Every device is a potential tracker; do your research before buying. Install tools that give you control, such as Pi-hole, even if imperfect. Install a monitoring tool on your home network.

        16 replies 95 proslijeđenih tweetova 437 korisnika označava da im se sviđa
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      20. Arvind Narayanan‏Ovjeren akaunt @random_walker 27. ruj 2019.
        • Prijavi Tweet

        These individual steps are not enough: we need collective action. Researchers must keep doing our part; we look forward to teaming up with journalists, civil society organizations, and the public, so that we can choose our future, not sleepwalk into it one channel at a time.

        25 replies 61 proslijeđeni tweet 488 korisnika označava da im se sviđa
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