A cybersecurity incident at SK Telecom, dating back to 2022, exposed the USIM data of nearly 27 million customers due to malware infections. The company is actively working to notify affected users, replace SIM cards, and enhance security measures to prevent future breaches. #Cybersecurity #DataBreach #SKTelecom #MobileSecurity
Keypoints
- SK Telecom’s recent breach involved malware that impacted 27 million subscribers.
- The malware infection was present for nearly three years before detection in December 2024.
- The attack compromised sensitive data, including USIM authentication keys and IMEI numbers.
- SK Telecom responded by issuing SIM replacements and strengthening security protocols.
- An ongoing investigation links the breach to a web shell infection dating back to June 2022.