• Kookmin Bank confirmed on October 26, 2026, that a previously disclosed data breach affected an additional 2,091 people.
• The additional victims comprised 1,631 customers and 460 current or former employees; the October 2 disclosure initially identified 119 people.
• The breach involved an employee mobile work-support system unrelated to internet banking or other financial transactions.
• The bank shut down affected systems and servers to block access, strengthening monitoring for abnormal activity.
• Exposed personal and credit information poses identity theft and phishing risks; the bank pledged full compensation for losses resulting from the breach.

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 26, 2026, and is solely responsible for the information contained therein.