• Dave@lemmy.nz
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    22 days ago

    The problem is that a website is generally not served from one domain.

    Put a Facebook like button on your website, it’s loaded directly from Facebook servers. Now they can put a cookie on your computer with an identifier.

    Now every site you visit with a Facebook like button, they know it was you. They can watch you as you move around the web.

    Google does this at a larger scale. Every site with Google ads on it. Every site using Google analytics. Every site that embeds a Google map. They can stick a cookie in and know you were there.

    • MonkderVierte@lemmy.ml
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      21 days ago

      Put a Facebook like button on your website, it’s loaded directly from Facebook servers. Now they can put a cookie on your computer with an identifier.

      Which is not allowed by GDPR btw, because they do that even if you don’t click them. There are plenty guides online, how to create your own, not tracking, facebook like button.