Bithumb internal groupware hacked, employee data leaked

Teaser from the source

South Korean crypto exchange Bithumb detected unauthorized access by an outside party to its internal mobile groupware system on Oct 27 2026, leading to a personal data leak, and reported it to KISA and the Personal Information Protection Commission the same day. Information found so far mainly concerns employees, such as names, departments and contact details, but Bithumb has not ruled out that customer information shared in internal work files was included and is still analyzing the scope. Bithumb says its exchange systems are physically separated from the groupware and no crypto was stolen. Daishin Securities and Mirae Asset Global Investments reported separate breaches the same day.

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