KT Corp Hid Three Cyberattacks, Deleted Logs, Lawmakers Say

At South Korea's National Assembly audit, lawmaker Cho Kyung-tae said KT concealed three cyberattacks between early 2024 and August 2025, deleting logs from infected servers, destroying hardware and publicly assuring customers its network was safe. Regulators fined KT ₩53.979 billion (~$40.5 million) over a femtocell breach.

• In March 2024, 38 servers infected with BPFDoor were found and logs were deleted on orders
• In April 2025, a follow-up audit found 10 more compromised servers
• In August 2025, KT destroyed servers and gave investigators false disposal dates
• PIPC fine reached ₩53.979 billion (~$40.5 million) over the femtocell breach