Daishin Securities Discloses Cyberattack Exposing 38,490 Customers' Personal Data

Daishin Securities disclosed on October 28, 2026 that a cyberattack exposed personal data of 38,490 customers. The exposed fields are names, email addresses and mobile phone numbers. No account credentials or financial account numbers were exposed. Root cause remained under investigation as of that date. The incident is part of a wave of attacks on South Korea's financial sector.