Yesterday I shared a report about Meta and Yandex tracking Android users through localhost. And today, boom — news dropped that Meta stopped doing it. Glad there are folks out there who spend their time digging into this stuff.
[...]Presently, however, Meta's use of these techniques appears to have halted. According to the researchers, "As of June 3rd 7:45 CEST, Meta/Facebook Pixel script is no longer sending any packets or requests to localhost. The code responsible for sending the _fbp cookie has been almost completely removed."