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South Korea's interim probe into sweeping KT breach finds 'basic' security failures

By Jenny Lee ( November 6, 2025, 10:04 GMT | Insight) -- KT, one of South Korea’s largest mobile carriers, is facing fresh questions over its security practices after the country’s government–industry task force unveiled interim findings that show a sweeping breach stemmed from basic failures in how the company authenticated and managed femtocells on its network. The Ministry of Science and ICT announced the findings Thursday from an investigation that began Sept. 9, one day after KT reported discovering illegal devices on its internal network while analyzing call records of fraud victims.KT, one of South Korea’s largest mobile carriers, is facing fresh questions over its security practices after the country’s government–industry task force unveiled interim findings that show a sweeping breach stemmed from basic failures in how the company authenticated and managed femtocells on its network....

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