Citizen Lab Exposes Webloc: Penlink's Global Ad-Based Geolocation Surveillance System Tracking Hundreds of Millions of Mobile Devices

📰 Dev.to · BeyondMachines

A Citizen Lab investigation reveals a surveillance system Webloc, now sold by U.S.-based Penlink, exploits mobile advertising data and app SDKs to track the locations and behaviors of up to 500 million devices globally, providing warrantless access to military, intelligence, and law enforcement agen

Published 10 Apr 2026
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