Russian Telecom Customers
Data Breach
www.mts.ru9,331,382
Records Exposed
May 2025
Date of Breach
Database
Breach Type
Sep 2026
Added to Database
About This Breach
In May 2025, a database containing approximately 9.4 million records of Russian mobile telecommunications customers was leaked and distributed via Telegram. The data was split into files by geographic region and aggregated subscribers across multiple Russian carriers, predominantly MTS (Mobile TeleSystems) but also including MegaFon, Beeline (VimpelCom), Tele2, and numerous smaller operators. The exposed records contained phone numbers, full names, dates of birth, gender, carrier and region of registration, along with numeric subscriber/tax identifiers. No passwords or email addresses were included. The records were distributed on Telegram by the channel @TheDataleak.
Compromised Data Types
Country
Russia
Language
Russian
Category
Telecommunications
Indexed On
Sep 30, 2026
Breach Type
Database
What Should You Do?
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