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Kr: Investigation shows KT concealed malware infections, security failures leading to hacking breach

Posted on November 6, 2025 by Dissent

Chang Dong-woo reports:

KT Corp., South Korea’s second-largest mobile carrier, was found to have concealed critical malware infections and failed to report the security breaches that led to a recent hacking and data theft incident, a government-led investigation revealed Thursday.

The joint government-private investigation team, which is examining KT’s recent cyberattack linked to illegal micro base stations, said the company learned between March and July of 2024 that 43 of its servers had been infected with so-called BPFDoor malware and other malicious code.

Despite detecting the infections, which exposed customer data, the company did not notify authorities and instead attempted to handle the issue internally, according to the team.

Read more at Yonhap News.


Related:

  • Gov't seeks police probe of KT for allegedly obstructing data breach investigation
  • KT Chief to Resign After Cybersecurity Breach Resolution
Category: Business SectorCommentaries and AnalysesNon-U.S.

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