Facebook Shadow Profiles [pdf]
I watched the Zuckerberg Senate hearings back in 2018. Transcript here [1].<p>I remember his answer on whether users are tracked when logged off. I mean the answer can really be a very simple Yes. But instead we got this evasion (I lightly cleaned up):<p>WICKER: One other thing: There have been reports that Facebook can track a user's Internet browsing activity, even after that user has logged off of the Facebook platform. Can you confirm whether or not this is true?<p>ZUCKERBERG: Senator — I — I want to make sure I get this accurate, so it would probably be better to have my team follow up afterwards.<p>WICKER: You don't know?<p>ZUCKERBERG: I know that the — people use cookies on the Internet, and that you can probably correlate activity between — between sessions.<p>We do that for a number of reasons, including security, and including measuring ads to make sure that the ad experiences are the most effective, which, of course, people can opt out of. But I want to make sure that I'm precise in my answer, so let me ...<p>WICKER: When — well, when you get ...<p>ZUCKERBERG: ... follow up with you on that.<p>[1] <a href="https://www.washingtonpost.com/news/the-switch/wp/2018/04/10/transcript-of-mark-zuckerbergs-senate-hearing/" rel="nofollow">https://www.washingtonpost.com/news/the-switch/wp/2018/04/10...</a>