2.35M Argentina Records: FiberTel Telecom Breach Details

HEROIC analysts identified a large dataset attributed to FiberTel Argentina, the defunct Argentinian telecommunications provider, circulating on underground forums on July 10, 2025. The breach contains 2,357,161 customer records including full names, email adresses, phone numbers, and gender.

Why the FiberTel Argentina Breach Is Dangerous

No passwords were leaked, but this breach is still a serious problem. Full names paired with phone numbers and email addresses give scammers everything they need to impersonate the victim or a legitmate service. Because FiberTel is no longer operating, most of these customers have no active security relationship with the company, so they may never learn that their data was compromised through any official channel.

What Was Exposed in the FiberTel Argentina Leak

• Email addresses
• Phone numbers
• First names
• Last names
• Gender

Why This Matters

This kind of personally identifiable information fuels targeted phishing, SIM swap attacks, and wire fraud. An attacker with your full name, phone number, and email can call your mobile carrier, request a SIM swap, and intercept two factor authentication codes. From there they can take over your bank, your email, and any service tied to your phone number. Identity theft risk is elevated for every person in this file.

How the FiberTel Argentina Database Dump Works

A database dump is a raw export of a company's user records. When FiberTel wound down operations, legacy customer tables remained on archived systems. Attackers often target these forgotten databases because the defenses around them are weaker than active production environments. Once exfiltrated, the data moves onto dark web marketplaces and private Telegram channels where anyone can download it.

Check If You Are Affected

HEROIC tracks the FiberTel Argentina breach as part of a 400 billion record breach intelligence database. Run a free scan with your email address to see if your name, phone number, and contact information appear in this dataset.