President Lee Jae Myung ordered a thorough investigation into a series of data breaches at South Korean financial institutions as AI-powered cyberattacks increasingly target the sector. The incidents began with breaches at Shinhan Bank, KB Kookmin Bank, Hana Bank and BNK Busan Bank, then spread to nonbank firms including Yegaram Savings Bank and Hyundai Capital. Shinhan reported exposed information involving 25,729 customers, while Yegaram said about 40,000 customers were affected and Hyundai Capital disclosed personal data involving 146 housing loan recruiters. Leaked information included names, phone numbers, income, loan limits and, in some cases, resident registration numbers. Authorities are examining whether the campaign also targeted mutual finance institutions and whether exposed data could support voice phishing or other fraud. No secondary financial losses have been confirmed. The attacks have primarily involved externally accessible systems used by loan recruiters and sales staff rather than core internet and mobile banking networks. Lee was briefed on the incidents and their responses, and ordered officials to assess the seriousness of the matter, investigate fully and develop countermeasures.