https://citizenlab.ca/research/analysis-of-penlinks-ad-based-geolocation-surveillance-tech/
Uncovering Webloc: An Analysis of Penlink’s Ad-based Geolocation Surveillance Tech - The Citizen Lab
Apr 15, 2026 - In this report, we uncover how a geolocation surveillance system called Webloc uses ad-based data to monitor hundreds of millions of people across the globe.
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