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Financial Security Institute Hacked, Data Leaked

South Korea's state-run Financial Security Institute (금융보안원) was hit by a hacking attack, with some information leaked, Yonhap and other outlets report on November 10. The attack targeted the institute's '정보보호 상시평가' (information security regular evaluation) site, and leaked data includes information related to financial firms' security status and some personal data such as email addresses, according to Chosun Ilbo. The institute confirmed the leak on November 9 and reported it to the Financial Services Commission and other authorities; the exact damage scale is still being confirmed. This comes amid a broader wave of cyberattacks: the Financial Supervisory Service reported over 470,000 personal data records leaked from 37 financial firms in the past month, with about 1 billion won ($745,000) stolen, and Mirae Asset Securities also saw data of about 39,000 customers and employees leaked, prompting an on-site inspection. Korean media are calling the institute the '금융보안 문지기' (financial security gatekeeper), noting that even the agency responsible for guarding the financial sector has been breached, which is expected to cause significant fallout as the hacking crisis that began in late September continues.

  1. Financial Security Institute reports data leak following hacking attack Yonhap · 2026-11-10
  2. ‘금융사 보안 점검’ 금융보안원도 해킹 피해… 일부 정보 유출 조선일보 · 2026-11-10
  3. [2보] '금융보안 문지기' 금융보안원도 해킹으로 정보유출 연합뉴스 · 2026-11-10
  4. ‘금융보안 문지기’ 금융보안원도 해킹에 뚫렸다 동아일보 · 2026-11-10
  5. Mirae Asset Securities Hit by Hackers Business Korea · 2026-11-09
  6. Over 470,000 pieces of personal data leaked from 37 financial firms: FSC Korea Times · 2026-11-05

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