Bithumb said a breach of its internal mobile groupware exposed personal information belonging to 6,444 customers. For 844 customers, names, phone numbers, email addresses, resident registration numbers, driver’s license numbers, bank account numbers and identification-card copies were directly exposed.
Information on the other 5,600 customers was taken in encrypted files, which Bithumb said cannot currently be viewed externally. The reported entry path was the company’s DaouOffice mobile groupware, accessed by an unauthorized outsider.