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FSI Confirms Data Leak After Hacking Attack

South Korea's state-run Financial Security Institute (FSI) reported a data leak following a hacking attack targeting its security assessment system, officials said Tuesday. The FSI, which oversees financial information protection, confirmed the leak on November 9 and notified authorities including the Financial Services Commission, according to Yonhap and the Korea Times. The attack is part of a broader wave of cyberattacks on the financial sector; earlier, Mirae Asset Securities confirmed a breach compromising the personal data of about 39,000 customers and employees, prompting an on-site inspection by the Financial Supervisory Service, and the regulator reported over 470,000 personal data records leaked from 37 financial firms over the past month with funds stolen estimated at 1 billion won ($745,000). Korean media and blogs are reacting with alarm, framing the FSI breach as a serious blow—one headline calls it "문지기도 뚫렸다" (even the gatekeeper was breached)—and urging stronger cybersecurity measures across the sector.

  1. Financial Security Institute reports data leak following hacking attack Korea Times · 2026-11-10
  2. Financial Security Institute reports data leak following hacking attack Yonhap · 2026-11-10
  3. Mirae Asset Securities Hit by Hackers Business Korea · 2026-11-09
  4. Mirae Asset Reports Data Breach Affecting Customers, Employees KBS World · 2026-11-07
  5. Over 470,000 pieces of personal data leaked from 37 financial firms: FSC Korea Times · 2026-11-05
  6. 문지기도 뚫렸다…금융보안원, 해킹으로 정보유출 한국경제 · 2026-11-10

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