Webloc: Analysis of Penlink's Ad-Based Geolocation Surveillance Tech
Summary
The Citizen Lab report analyzes Webloc, an ad-based geolocation surveillance system developed by Cobwebs Technologies and later sold by Penlink. It documents how Webloc aggregates data from mobile apps and digital advertising to monitor hundreds of millions of devices, identifies major customers (including ICE, DHS, U.S. military, and various U.S. state and local agencies), and maps a sprawling global server infrastructure. The report also examines governance, legal concerns under GDPR and U.S. privacy law, potential misuse, and the broader ecosystem of Cobwebs products like Tangles, Lynx, Trapdoor, and Weaver, highlighting transparency gaps and calls for regulatory scrutiny and oversight.