Global Surveillance Tool Tracks Hundreds of Millions of Devices Through Ad Data, Researchers Reveal
Law enforcement use of advertising data raises serious privacy and oversight concerns worldwide
A new investigation has revealed that law enforcement agencies across multiple countries are using a powerful surveillance platform called Webloc to track the movements of hundreds of millions of mobile devices globally.
Developed by Cobwebs Technologies and later acquired by Penlink, the system leverages digital advertising data to provide detailed location intelligence.
How the Surveillance System Works
Webloc operates by collecting and analyzing data from mobile apps and advertising networks.
This includes:
- Device identifiers
- Location coordinates
- Behavioral and profile data
Because mobile apps continuously share advertising data, the system can build detailed movement patterns over time.
As a result, authorities can track:
- Individual movements
- Frequent locations (home, workplace)
- Historical activity spanning years
Scale of the Surveillance
The system reportedly processes data from up to 500 million devices worldwide.
This makes it one of the largest known surveillance capabilities built on commercial data sources.
Additionally, the platform allows users to:
- Monitor population-level movement trends
- Identify individuals behind devices
- Correlate digital activity with physical locations
Therefore, the line between digital tracking and real-world surveillance becomes increasingly blurred.
Who Is Using This Technology
According to the findings, Webloc has been used by:
- U.S. law enforcement agencies
- Immigration and Customs Enforcement (ICE)
- Military and intelligence units
- Police departments across multiple regions
- Agencies in countries such as Hungary and El Salvador
Because of its accessibility, the tool is not limited to national intelligence—it extends to local law enforcement as well.
Why This Raises Concern
The biggest issue is not just the technology—but how it is used.
Reports suggest that:
- Tracking can occur without a warrant
- Oversight mechanisms may be limited
- Individuals may be monitored without consent
Moreover, the system relies on commercial data ecosystems, not direct surveillance infrastructure.
As a result, many users remain unaware that their data contributes to tracking systems.
The Role of Ad Tech in Surveillance
This case highlights a broader issue.
Modern surveillance increasingly depends on:
- Advertising data brokers
- Mobile app tracking ecosystems
- Third-party data aggregation
Because these systems operate in the background, they create a hidden surveillance layer.
Meanwhile, organizations collect and trade this data for marketing purposes, but it can also be repurposed for intelligence and monitoring.
Broader Implications
This development has several implications:
- Privacy boundaries are becoming harder to define
- Commercial data is enabling state-level surveillance
- Attribution and accountability are becoming more complex
Additionally, similar tools may already be in use globally, often without public awareness.
Strategic Takeaway
This case highlights a major shift in surveillance practices.
Authorities no longer rely solely on traditional methods. Instead, they leverage existing digital ecosystems to gain visibility into human behavior at scale.
Because in today’s digital world,
your location is not just tracked by apps—it may also be analyzed, aggregated, and used far beyond its original purpose.