KT said on the 19th that at 11:57 p.m. on the 18th, it reported indications of a breach to the Korea Internet & Security Agency (KISA).
KT said, "After this year's telecom hacking incident, to conduct an accurate assessment, we commissioned external security corporations and carried out an investigation of companywide servers over about four months, and through the resulting report confirmed indications of a breach," adding, "We reported four traces of server compromise and two suspected indications to the Korea Internet & Security Agency (KISA)."
KT said it will actively cooperate with the government investigation going forward to promptly identify the compromised servers and do its utmost to ensure the specific details and causes of the breach are determined, while also planning to announce the related matters.