11 Coinone consultation information items possibly leaked... including passwords

Coinone disclosed that a cyberattack on MetaM, the third-party server handling its customer chat and phone support, may have exposed 11 categories of user data, including passwords and South Korean resident registration numbers. The breach occurred around 4 a.m. on the 12th, and Coinone was notified by MetaM at about 9:20 a.m. the same day. Other potentially leaked fields include phone numbers, names, emails, birth dates, bank account numbers, ID issuance dates, home addresses, and crypto wallet addresses. The exchange, which has not disclosed the number of affected users, said it confirmed the incident via a notice posted on its website on the 15th. The inclusion of passwords and national ID numbers raises the stakes for credential-stuffing and identity-theft risk, so the next things to watch are Coinone's affected-user count, whether it forces password resets, and any regulatory scrutiny of third-party vendor security at Korean exchanges.