TREE NEWS update: Bithumb said an unauthorized breach of its internal mobile office system, DaouOffice, exposed personal information tied to 6,444 customers, of whom 844 had data confirmed leaked while 5,600 remained encrypted and unreadable. The exchange said 715 employees were also affected. Stolen data includes names, phone numbers, emails, resident registration numbers, driver’s license numbers, bank account numbers and ID copies. Bithumb said it will take full responsibility for all confirmed losses and provide support and compensation to affected customers.
Bithumb Hack Exposes Data of 844 Customers, 715 Employees
The exposure of resident registration numbers, licence and bank details — not just contact data — raises the stakes beyond a typical exchange leak, because this is identity-grade material that can outlive any password reset. Bithumb's pledge to cover confirmed losses is notable, but the split between confirmed and still-encrypted records leaves the true scope unsettled. What matters next is whether the encrypted 5,600 stay unreadable, and whether the internal office tooling that was breached becomes a wider review point for Korean exchanges.
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