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Mirae Asset Securities confirmed on Saturday that hackers breached its systems, leaking personal information of some 39,000 customers and employees, Yonhap and the Korea Times report. The attack targeted the mobile web phone authentication login service and the 'mi-global' groupware system on Nov. 4-5, exposing account numbers of about 3,800 customers and personal data of 35,255 employees, including retirees and outsourced workers, according to the Kyunghyang Shinmun. The breach is part of a wider wave: the Financial Services Commission reported over 470,000 personal data records leaked from 37 financial firms in the past month, with stolen funds estimated at 1 billion won ($745,000), Yonhap and the Korea Times report. Korean media frame this as the latest in a growing series of cyberattacks on the financial sector, with KBS World noting the industry's vulnerability.