Firefox Rolls Out Total Cookie Protection By Default | The Mozilla Blog
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Updated Aug. 28, 2024. Take back your privacy Firefox is rolling out Total Cookie Protection by default to more Firefox users worldwide, making Firefox the
  • intensely_humanEnglish
    20·
    2 months ago

    How is Facebook able to know what site is requesting it? Is it in the referer header, or is it parameters in the javascript/image url?

    • DaveEnglish
      20·
      2 months ago

      There is a referer header sent, but depending on the exact code added to the page, it’s very likely they are loading a snippet of JavaScript that lets them collect other information and trigger their own sending of information to their server.

      For example, Google Analytics has javascript added to the page, but loading fonts from Google’s CDN (which many sites do) will rely on the referer.