Daishin Securities, Mirae Asset Global Investments and crypto exchange Bithumb reported data breaches involving customer information on Wednesday. Daishin Securities stated that personal information of 38,490 customers was leaked, including names, email addresses, and phone numbers.
Data breaches at financial firms and crypto exchanges can lead to identity theft and financial fraud for affected customers, and may result in regulatory scrutiny and financial penalties for the companies involved.
South Korean financial firms Daishin Securities, Mirae Asset Global Investments, and crypto exchange Bithumb all reported data breaches involving customer information on Wednesday, October 28, 2026. Daishin Securities confirmed that personal information of 38,490 customers, including names, email addresses, and mobile phone numbers, was leaked following unauthorized access by hackers. The brokerage is investigating the incident with authorities and has notified affected customers, stating it will provide compensation for any damages. Separately, Bithumb reported a leak of some customer information due to a cyber attack, and financial authorities have initiated an inspection into a data breach at Mirae Asset Global Investments.
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