2026 Daishin Securities — personal and financial information of 38,490 customers exposed via online account-opening server
Data compromised
Names, email addresses, postal and mobile numbers, bank names and account numbers (some reported as encrypted), and login IDs, per Korean press reports of the company's findings. Field lists differ between outlets.
Technical writeup
The 38,490 figure is quoted in Korea Herald's October 28 report. The company's own release was not reviewed directly. Korean press also reported a regulatory filing for the same count; DART was not checked.
Root cause
Daishin says abnormal access to the server behind its non-face-to-face account-opening service was detected on October 17, 2026. An internal investigation found unauthorised access and personal data taken. The company has reported to regulators.