SK Telecom Reveals 3-Year Malware Breach Affecting 27 Million Subscribers

SK Telecom has revealed that a cybersecurity incident, initially disclosed in April, began in 2022 and lasted for three years, exposing the USIM data of 27 million subscribers. The incident, caused by malware, compromised sensitive information, including users' phone numbers. The specific technical details of the malware and the methods of infiltration have not been disclosed. The real impact includes the exposure of data from 27 million phone numbers, representing a major breach of user privacy.