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advertising intelligence

research → Report

Uncovering Webloc

An Analysis of Penlink’s Ad-based Geolocation Surveillance Tech

Location data collected from mobile apps and digital advertising can reveal habits, interests and almost any other aspect of someone’s life. 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.

April 9, 2026
Mass Surveillance Targeted Surveillance
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