Coinone Customer Service Outsourcer Hacked, Some User Personal Information Leaked

November 15 - South Korean crypto trading platform Coinone announced that in the early hours of November 12, the server of its customer service outsourcing provider MetaM was hacked by external parties, resulting in the leakage of personal information left by some customers during chat or phone inquiries. Coinone received a report from the outsourcing provider at approximately 9:20 AM that day and disclosed the incident on November 15. Users without customer service inquiry records are not affected by this incident. Coinone stated that its account, trading, and wallet systems operate independently from the outsourcing provider's servers, and no direct intrusion into these systems has been found so far.

Potentially leaked information includes names, phone numbers, email addresses, dates of birth, account numbers, passwords, Korean resident registration numbers, document issuance dates, addresses, wallet addresses, and transaction hashes (TXID). The actual leaked items vary depending on the information users provided during inquiries. Coinone has not yet disclosed the number of affected individuals and will notify users through separate notices or an inquiry service later.

Coinone has blocked the illegal access path, switched outsourced customer service to email inquiries, and strengthened monitoring of abnormal logins and transactions. The platform has reported to relevant South Korean regulatory authorities and reminds users who have provided passwords during customer service inquiries to change their Coinone passwords and passwords on other websites using the same password as soon as possible, and to be wary of phishing calls, text messages, and emails impersonating customer service.