KB Kookmin Bank says personal credit data leak hits 99 customers, 20 staff

• Kookmin Bank confirmed a personal and credit data leak dated Sept. 30, 2026, affecting 99 customers.
• The incident also involved personal data for 20 current and former employees.
• The exposed system was an internal employee mobile support platform, not internet banking or customer transaction channels.
• Data types included contact details and encrypted identifiers, with some records also containing credit grades, income, and loan or deposit balances.
• The bank shut down affected systems and servers to block access paths, citing heightened fraud risk such as phishing.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Kookmin Bank published the original content used to generate this news brief on October 02, 2026, and is solely responsible for the information contained therein.