Summary: SK Telecom, South Korea’s largest mobile carrier, has reported a malware infection that potentially exposed sensitive USIM-related information of its customers. The malware was detected during a weekend cyberattack, prompting the company to take immediate action to mitigate the threat. Although no evidence of data misuse has been found, investigations are ongoing, and customers are advised to enhance their security measures.
Affected: SK Telecom
Keypoints :
- Malware detected on April 19, 2025, potentially compromising customer USIM data.
- Data stored on USIM includes IMSI, MSISDN, authentication keys, and personal contacts.
- SK Telecom has implemented measures to block SIM swaps and suspend accounts exhibiting suspicious activity.
- Customers are encouraged to utilize USIM protection services to enhance their security.