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South Korea faults SK Telecom in historic breach, orders security overhaul

By Jenny Lee ( July 4, 2025, 09:56 GMT | Insight) -- South Korea’s worst-ever telecom data breach began nearly four years ago when hackers exploited SK Telecom's plaintext credentials and weak internal defenses, the Ministry of Science and ICT said today, releasing the final findings of a months-long joint probe and announcing planned fines and a potential criminal investigation. The ministry blamed the incident on a chain of preventable missteps by the telecom giant — missed alerts, poor breach response and failures to preserve evidence — that not only violated South Korean network law but also breached the company’s contractual obligation to provide secure services.South Korea’s worst-ever telecom data breach began nearly four years ago when hackers exploited SK Telecom's plaintext credentials and weak internal defenses, the Ministry of Science and ICT said today, releasing the final findings of a months-long joint probe and announcing planned fines and a potential criminal investigation....

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