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leakCritical4/18/2025

SK Telecom Data Breach Exposes USIM Subscriber Data

SK Telecom

A cyberattack exposed sensitive subscriber identity data affecting tens of millions of SK Telecom customers.

In April 2025 SK Telecom disclosed a major cybersecurity breach involving malware inside its network that exposed subscriber authentication and device data.

Tags

#telecom#malware#subscriber data

Last updated: March 7, 2026

SK Telecom Data Breach Exposes USIM Subscriber Data - Korea Cyber Monitor