<ul data-eligibleForWebStory="true"><li>SK Telecom faced a major cybersecurity breach affecting up to 26.9 million customers earlier this year.</li><li>The breach occurred in summer 2022 but was only disclosed in April after being reported to KISA.</li><li>23 of SKT's servers were impacted, potentially exposing 9.32 gigabytes of USIM-related data.</li><li>26.9 million IMSI numbers were compromised in the breach.</li><li>SKT offered free USIM card replacements to affected customers, leading to a nationwide shortage of USIMs.</li><li>SKT paused new subscriber acquisitions due to the USIM shortage, following government advice for two months.</li><li>The Ministry of Science and ICT in South Korea lifted the administrative guidance, allowing SKT to resume acquiring new subscribers after securing sufficient USIM stock.</li><li>SKT received approval to onboard new customers and continues to prioritize USIM replacements for affected subscribers.</li><li>Despite the progress, SKT's CEO estimates a potential loss of up to 2.5 million customers to rival operators, leading to a projected revenue loss of up to $5 billion over three years.</li></ul>

SK Telecom Resumes New Subs After Cyber Breach Recovery

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