INSPECTING ARCHIVED INTELLIGENCE (OUTDATED VERSION).

Six banks targeted by AI hacking resulting in data breaches

| 2026-10-02 15:54 CRITICAL LOW AI-ENABLED ATTACK · AUTONOMOUS DATA BREACH
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Executive Summary
AI-generated
At least six domestic banks, including Shinhan, KB Kookmin, Hana, UBI, NHNongHyup, and BNK Busan Bank, are suspected to have been targeted by simultaneous hacking attacks utilizing AI tools on October 2nd. The attackers exploited various vulnerabilities at each bank, including employee websites, with the three major banks - Shinhan (approximately 25,000 people), KB Kookmin (119 people), and Hana Bank (89 people) - confirming the leakage of customer personal information. The Financial Services Commission held an emergency meeting on October 2nd to order a thorough inspection of computer systems at these banks, which are primarily in the finance industry. This incident highlights concerns about AI hacking damage spreading beyond finance into other industries due to outdated security systems and technologies not keeping pace with advancing AI attack technology.
Technical Mitigations AI-generated
• Patch the AI agent's "self-infiltration" method used in the attack to prevent similar vulnerabilities. • Block or hunt for employee websites that may be exploited by attackers. • Use a more advanced security system and technologies that can keep pace with the speed of AI attack technology.
Intelligence Metadata
Actors / Malware / CVEs / Campaigns
Target & Sectors
Global Scope financefinance
Incident Timeline
‎2026/10/02
At least six domestic banks, including Shinhan and Hana Bank, have been targeted by simultaneous hacking attacks utilizing AI tools resulting in the release of personal information.
organisation the National University of Science and Technology
Kim Hwan-guk, Professor of Information Security Cryptography at the National University of Science and Technology, said, "As the AI attack technology advances, the security systems and technologies of banks and companies are not keeping pace with the speed."
organisation Hana
At least six domestic banks, including Shinhan, KB Kookmin, Hana, UBI, NHNongHyup, and BNK Busan Bank, are suspected to have been targeted by simultaneous hacking attacks utilizing AI tools.
organisation UBI
At least six domestic banks, including Shinhan, KB Kookmin, Hana, UBI, NHNongHyup, and BNK Busan Bank, are suspected to have been targeted by simultaneous hacking attacks utilizing AI tools.
organisation BNK Busan Bank
At least six domestic banks, including Shinhan, KB Kookmin, Hana, UBI, NHNongHyup, and BNK Busan Bank, are suspected to have been targeted by simultaneous hacking attacks utilizing AI tools.
organisation Hana Bank
Among them, the three major banks - Shinhan (approximately 25,000 people), KB Kookmin (119 people), and Hana Bank (89 people) - have confirmed the leakage of customer personal information.
organisation The Financial Services Commission
The Financial Services Commission held an emergency meeting on the 2nd and ordered a thorough inspection of the computer systems of banks and card rights.
Intelligence Sources
Chosun Economy 2026-10-02