Daishin Securities Says Hacking Attack Exposed 38,490 Customers' Personal Data

Daishin Securities, a South Korean investment firm, said on October 28, 2026 that a hacking attack exposed personal information of 38,490 customers. The exposed details are names, email addresses and mobile phone numbers. Account passwords and financial account numbers were not exposed. Officials had not yet found how it happened. It is one of many attacks on South Korea's financial firms.