SK Telecom Warns of Data Breach Affecting Millions of Customers

SK Telecom, the largest wireless telecommunications operator in South Korea, has warned that malicious actors have accessed the USIM (Universal Subscriber Identity Module) information of its customers through a malware attack. The company holds approximately 48% of the mobile service market share, which represents around 34 million subscribers. The technical details of the attack have not been specified, but the incident could potentially affect millions of customers.