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Data Breach News2 min read

2.7M Fibertel Argentina Customer Records Leaked

By InsecureWeb Team

This report reflects observations of dark web activity. InsecureWeb makes no representations regarding the accuracy of this data.

2.7M Fibertel Argentina Customer Records Leaked

Data Breach Summary

A dataset titled “Database Fibertel Argentina” containing approximately 2,736,784 records was leaked on darkforums.st in July 2025 by user injectioninferno2, the same source as the previous Social Works leak.

Fields include:

  • Region/branch (e.g. CENTRO, SALTA)
  • ISP: FIBERTEL
  • Service channel (VENTANILLA, DEBITO AUTOMATICO)
  • Full names, gender, nationality and document types
  • Document numbers and CUIL
  • Phone number, email address
  • Physical address (street + city, Salta province)

Where and How?

The leak was posted on darkforums.st, a known platform specializing in stolen data and leaks. The structured nature and volume (~2.7 M records) indicate this is not scraped from public web pages, but instead originates from an internal customer database at Fibertel, likely extracted from billing, CRM, or service systems.

Company Data Breach History

A search for previous leaks or media coverage regarding Fibertel yielded no results . This appears to be the first known incident involving a large-scale leak of Fibertel customer data.

Risks & Threats

  • Personal data exposure: Full names, document numbers, CUIL, contact info and addresses — enable phishing, identity theft, targeted scams.
  • Service-specific vulnerabilities: Internal service channels may expose details about payment methods and customer support access.
  • Regional exposure: Records span multiple provinces (e.g., Salta), indicating data from more than one Fibertel office.

Recommendations for Personal Data Protection

Individuals impacted by this leak should:

  • Monitor for suspicious emails, calls or messages referencing FIBERTEL or using their personal info.
  • Be cautious of phishing attempts requesting account credentials or payments.
  • Enable two-factor authentication (2FA) on any associated online accounts.
  • Consider credit monitoring or identity protection services if available in Argentina.

What is InsecureWeb?

InsecureWeb is a Dark Web monitoring service that keeps track of recent data breaches and tracks their impact by monitoring the darkest places of the internet.

Our commitment lies in providing top-notch cybersecurity services to our clients. Through continuous monitoring of the dark web and advanced threat detection methodologies, we strive to identify potential breaches promptly, enabling swift response and mitigation efforts. With our state-of-the-art tools and expertise, we prioritize the confidentiality, integrity, and availability of our clients’ data.

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