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zeynep's profile
zeynep tufekci
zeynep tufekci
zeynep tufekci
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@zeynep

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zeynep tufekciVerified account

@zeynep

Complex systems, wicked problems. Society, technology, science and more. @UNC professor. @NYTimes columnist. My newsletter is @insight: http://www.theinsight.org 

floating in a most peculiar way
theinsight.org
Joined August 2009

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    zeynep tufekci‏Verified account @zeynep 13 Jul 2019

    zeynep tufekci Retweeted Edin Jusupovic

    Facebook inserts tracking data on *all* pictures uploaded to its site. I believe they have been doing this for a while? It's one of those things that they probably consider normal operating procedure but few people outside the company have any idea this is going on.https://twitter.com/oasace/status/1149181539000864769 …

    zeynep tufekci added,

    Edin Jusupovic @oasace
    #facebook is embedding tracking data inside photos you download. I noticed a structural abnormality when looking at a hex dump of an image file from an unknown origin only to discover it contained what I now understand is an IPTC special instruction. Shocking level of tracking.. pic.twitter.com/WC1u7Zh5gN
    Show this thread
    10:59 AM - 13 Jul 2019
    • 484 Retweets
    • 490 Likes
    • Lauren Manley Darren Sangita Mark Rowland Netizen Hadi Asghari ztaylor.eth BretPh0t0n Roisin Markham dana
    15 replies 484 retweets 490 likes
      1. James‏ @jgerity 13 Jul 2019
        Replying to @zeynep

        In googling around the edge of this, I found references going back to at least 2016 to this IPTC payload. https://www.hackerfactor.com/blog/index.php?/archives/726-Facebook-Tracking.html …

        0 replies 0 retweets 0 likes
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      2. Heidi Echternacht  ♥️‏ @hechternacht 13 Jul 2019
        Replying to @zeynep

        Doing the same in Instagram likely?

        1 reply 0 retweets 1 like
      3. Zantana‏ @Zantana47460998 13 Jul 2019
        Replying to @hechternacht @zeynep

        Instagram is owned by Facebook, so yes.

        0 replies 0 retweets 0 likes
      4. End of conversation
      1. Thomas Paine  ✊‏ @TomPaineToday 13 Jul 2019
        Replying to @zeynep

        i also doubt most are aware the amount of data saved on every iPhone picture… this tracking seems to have been well documented for years though: https://stackoverflow.com/questions/31120222/iptc-metadata-automatically-added-to-uploaded-images-on-facebook …

        0 replies 3 retweets 9 likes
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      2. Henrik Moltke‏Verified account @moltke 13 Jul 2019
        Replying to @lottefolke

        It’s basically a unique fingerprint which will allow Facebook (or anyone else with access to the ledger) to know who uploaded a photo to FB, and when - even if it spreads outside the platform.

        1 reply 1 retweet 10 likes
      3. Show replies
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      2. Jean-Denis LEFEUVRE‏ @jdl288 13 Jul 2019
        Replying to @zeynep @VGautron

        In order to prevent offensive contents from being shared or re uploaded. Black-listed content can be blocked easily with this mark-up. Some laws order FB to retract offensive or terrorist content.

        1 reply 1 retweet 1 like
      3. Eric Schultz, The F-Bomb Guy‏ @wwahammy 13 Jul 2019
        Replying to @jdl288 @zeynep @VGautron

        They don't need to do that. There's very simple ways to make sure two pictures are identical, particularly hashing.

        1 reply 0 retweets 0 likes
      4. Show replies
      1. ml8_ml8‏ @ml8_ml8 13 Jul 2019
        Replying to @zeynep

        #AllYourPrivacyIsOurs

        0 replies 0 retweets 0 likes
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      1. Glenn Ashton‏ @ekogaia 13 Jul 2019
        Replying to @zeynep @tlaskawy

        If you want to beat it copy your picture to open source pic program like http://paint.net  and then reformat it, resave it and, viola, no data attached. #FacebookIsEvil

        0 replies 0 retweets 0 likes
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