According to CoinMeta, the server of the external consulting service provider for the South Korean cryptocurrency exchange Coinone was illegally invaded by external attackers in the early hours of November 12, resulting in the leakage of personal information of some users who had consulted the customer service center. The leaked information included users' provided phone numbers, names, email addresses, dates of birth, bank account numbers, passwords, resident registration numbers, dates of document issuance, home addresses, wallet addresses, and transaction details ID ( txid), which varied from person to person. Users without any consultation records were not affected. The Coinone member accounts, transaction, and virtual asset wallet systems are independent of the external provider's server, and no signs of direct intrusion have been found so far.