Bithumb discovered unauthorized access to its internal mobile groupware system on October 27, 2026, and confirmed a personal data leak, according to Yonhap News Agency. The exchange is still checking whether customer information was compromised. No theft of funds has been reported, and investigators have not established a link to the other intrusions disclosed the same day.
Daishin Securities said personal and credit information belonging to 38,490 customers had leaked. Mirae Asset Global Investments reported a hacking incident but did not say how many clients were affected. South Korea’s Financial Supervisory Service said it is investigating all three cases.
