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securitySecurity/THREATS/HIGH

Citizen Lab: Law Enforcement Used Webloc to Track 500 Million Devices via Ad Data

sourceThe Hacker News
calendar_todayApril 11, 2026
schedule2 min read
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EXECUTIVE SUMMARY

Law Enforcement's Use of Webloc for Global Surveillance Uncovered

Summary

The article discusses the use of Webloc, a geolocation surveillance system, by various law enforcement agencies to track devices globally using advertising data. This tool was initially developed by Cobwebs Technologies and is now marketed by Penlink.

Key Points

  • Webloc is a global geolocation surveillance system that uses advertising data to track devices.
  • The system has been used by Hungarian domestic intelligence, El Salvador's national police, and several U.S. law enforcement agencies.
  • Cobwebs Technologies, an Israeli company, originally developed Webloc.
  • In July 2023, Cobwebs Technologies merged with Penlink, which now sells Webloc.
  • The surveillance system has been used to track approximately 500 million devices.

Analysis

The use of Webloc by law enforcement agencies raises significant privacy and ethical concerns, as it involves tracking a vast number of devices without the users' knowledge or consent. This highlights the potential misuse of advertising data for surveillance purposes, emphasizing the need for stricter regulations and transparency in data handling by both technology companies and law enforcement agencies.

Conclusion

IT professionals should be aware of the potential privacy implications of advertising data being used for surveillance. It is crucial to advocate for stronger data protection measures and ensure that systems handling sensitive data are compliant with privacy laws.