Luis Fernando Garcia
Senior Researcher
Publications
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