From Ars Technica ↗ - Meta and Yandex were found to be using embedded tracking scripts to link Android users’ web browsing activity with their app identities, effectively de-anonymizing them, bypassing typical privacy protections like browser sandboxing and incognito mode.
The surveylance economy ↗ makes these companies go to some crazy lengths to track everything that you do, just to cram more ads wherever they can. Unfortunately, at least in the U.S., you don’t have any recourse.
It’s important to note - these trackers will track you and your activity regardless of whether you have an account with them.