Related papers: RegTrack: Uncovering Global Disparities in Third-party Advertising and Tracking

RegTrack: Uncovering Global Disparities in Third-party Advertising and Tracking

URL: http://arxiv.org/abs/2603.02679v1
Date: Tue, 03 Mar 2026 07:21:15 GMT
Title: RegTrack: Uncovering Global Disparities in Third-party Advertising and Tracking
Authors: Tanya Prasad, Rut Vora, Soo Yee Lim, Nguyen Phong Hoang, Thomas Pasquier,
Abstract summary: Third party advertising and tracking (A&T) are pervasive across the web, yet user exposure varies significantly with browser choice, browsing location, and hosting jurisdiction.<n>Our analysis reveals that browser choice, user location, and hosting jurisdiction each shape tracking exposure in distinct ways.
Score: 2.625007842420751
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Third party advertising and tracking (A&T) are pervasive across the web, yet user exposure varies significantly with browser choice, browsing location, and hosting jurisdiction. We systematically study how these three factors shape tracking by conducting synchronized crawls of 743 popular websites from 8 geographic vantage points using 4 browsers and 2 consent states. Our analysis reveals that browser choice, user location, and hosting jurisdiction each shape tracking exposure in distinct ways. Privacy focused browsers block more third party trackers, reducing observed A&T domains by up to 30% in permissive regulatory environments, but offer smaller relative gains in stricter regions. User location influences the tracking volume, the prevalence of consent banners, and the extent of cross border tracking: GDPR regulated locations exhibit about 80% fewer third party A&T domains before consent and keep 89-91% of A&T requests within the EEA or adequacy countries. Hosting jurisdiction plays a smaller role; tracking exposure varies most strongly with inferred user location rather than where sites are hosted. These findings underscore both the power and limitations of user agency, informing the design of privacy tools, regulatory enforcement strategies, and future measurement methodologies.

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