New web tracking technique is bypassing privacy protections
techxplore.com
Advertisers and web trackers have been able to aggregate users' information across all of the websites they visit for decades, primarily by placing third-party cookies in users' browsers.

Researchers at UC San Diego have for the first time sought to quantify the frequency of UID smuggling, a new method for tracking users across the Web, which does not require third-party cookies. The research team is also releasing both their complete dataset and their measurement pipeline for use by browser developers.