Overview

• SK Group Chairman Chey Tae-won publicly apologized on May 7 for the April 18 cyberattack on SK Telecom, which exposed sensitive USIM data of 25 million customers.
• Chey committed to full cooperation with government investigations and announced plans for a cybersecurity review across all SK Group affiliates.
• SK Telecom has replaced over 1 million USIM cards and enrolled more than 24 million users in its USIM Protection Service to safeguard against fraud.
• To prioritize remediation efforts, SK Telecom has suspended new subscriber sign-ups and is addressing USIM inventory shortages to expedite replacements.
• An external information protection innovation committee will be established to strengthen long-term digital security measures across the conglomerate.