After Shinhan, KB Kookmin Bank Also Suffers Customer Data Leak... Information of About 100 Exposed
Following a similar incident at Shinhan Bank, KB Kookmin Bank has also experienced a hacking-related customer information leak.
According to the financial sector on October 2, 2026, KB Kookmin Bank identified signs that information belonging to approximately 100 customers had been leaked and reported the case to financial authorities that morning. The system from which the customer information was leaked is reported to be a mobile work support system used by employees.
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KB Kookmin Bank is currently investigating the cause of the information leak, the specific items of leaked information, and the possibility of additional damage. The bank plans to devise countermeasures after determining the exact circumstances of the incident and the extent of the damage.
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