Brazilian Telecom Customers Targeted in the 32M Record Vivo Breach

HEROIC analysts uncovered the Vivo Telecom Brazil breach, which occured in September 2020 and exposed over 32,476,143 records. The leaked data includes phone numbers, first names, and last names belonging to millions of Brazilian telecommunications customers. This breach has resurfaced in underground markets, amplifying the risk to those whose data was recieved by malicious actors years after the initial incident.

How Attackers Use Phone Numbers and Full Names for Fraud

With phone numbers and full names in hand, attackers can launch SIM-swapping attacks to hijack mobile accounts, intercept two-factor authentication codes, and gain access to banking and email platforms. These data types are partcularly dangerous in combination, enabling targeted phishing calls, identity impersonation, and fraudulent account recovery requests against Vivo customers and beyond.

What Was Exposed in the Vivo Telecom Brazil Breach

• Phone Number
• First Name
• Last Name

Why This Matters for Brazilian Telecom Customers

Brazil has seen a surge in identity fraud tied to leaked telecom records. When personal identifiers like names and phone numbers are combined with other leaked Brazilian datasets, criminals can build detailed profiles used for social engineering and financial fraud. The scale of this breach, over 32 million records, means a significant portion of Brazil's population may be accessable to threat actors at low cost on dark web markets.

How Database Breaches Work

A database breach occurs when unauthorized parties gain access to a stored collection of records, typically by exploiting a vulnerability in a web application, misconfigured cloud storage, or compromised credentials. Attackers extract the data and often sell or publish it on hacking forums. In the case of Vivo Telecom Brazil, the database containing millions of customer records was posted to a popular forum and later spread across multiple platforms.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches across 400 billion leaked records to tell you exactly what information of yours has been exposed. Search your email or phone number now at HEROIC to see if your Vivo Telecom Brazil data or other breach data is out there.