> The Meta (Facebook) Pixel JavaScript, when loaded in an Android mobile web browser, transmits the first-party _fbp cookie using WebRTC to UDP ports 12580–1258

> The Meta (Facebook) Pixel JavaScript, when loaded in an Android mobile web browser, transmits the first-party _fbp cookie using WebRTC to UDP ports 12580–12585 to any app on the device that is listening on those ports. And people on HN dismiss those who choose to browse with Javascript disabled. There's a reason that the Javascript toggle is listed under the Security tab on Safari.