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South Korea's Financial Sector Faces Widespread Hacking Attacks

South Korea's Financial Sector Faces Widespread Hacking Attacks

First seen 4 Oct 2026, 04:08 UTC • •
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ThreatCluster AI
ThreatCluster •October 4, 2026 at 06:06 UTC
  • •A series of hacking attacks has affected multiple financial institutions in South Korea.
  • •The FSC is holding an emergency meeting to address the widespread data breaches.
  • •The attacks have compromised personal data of tens of thousands of customers across banks and non-bank lenders.

South Korea's Financial Services Commission (FSC) has summoned CEOs from all financial firms due to a series of hacking attacks that have compromised personal data across major banks and non-bank lenders. The breaches began with Shinhan Bank leaking 25,000 customer records on September 30, followed by incidents at Hana Bank and KB Kookmin Bank. The damage has extended to secondary institutions, including Yegaram Savings Bank and Hyundai Capital. The FSC's emergency meeting on October 4 aims to assess the situation and enhance security measures across the sector. The urgency of the meeting was prompted by additional breaches confirmed at Hyundai Capital and Yegaram Savings Bank, which heightened concerns about the security response framework. Financial authorities are still determining whether the attacks were conducted by the same group or multiple actors.

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Timeline

2026-09-30
Shinhan Bank data breach confirmed
Approximately 25,000 customer records were leaked due to hacking.
Finance.Biggo
2026-10-01
Additional breaches reported
Hana Bank and KB Kookmin Bank confirmed leaks of personal information affecting 89 and 119 customers, respectively.
Finance.Biggo
2026-10-04
Emergency meeting convened
The FSC is holding an emergency meeting to discuss security responses to the hacking incidents affecting the financial sector.
En.Sedaily

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Common questions

Which financial institutions are affected?
Major banks like Shinhan, Hana, and KB Kookmin, as well as non-bank lenders like Yegaram Savings Bank and Hyundai Capital.
What is the FSC's response to the breaches?
The FSC is convening an emergency meeting to review security measures and assess the damage across the financial sector.
Is there a known threat actor behind the attacks?
Financial authorities are still investigating whether the attacks were conducted by a single group or multiple actors.