According to ME News, on November 15 (UTC+8), South Korean cryptocurrency exchange Coinone announced that on the early morning of November 12, the server of its customer service outsourcer, MetaM, was externally breached, resulting in the leakage of personal information provided by some customers during chat or phone inquiries.
Coinone received a report from its external vendor around 9:20 AM that day and disclosed the incident on November 15. Users with no customer service inquiry records are not affected by this incident. Coinone stated that its accounts, trading, and wallet systems operate independently from the vendor’s servers, and no direct compromise of these systems has been detected.
Information that may have been leaked includes name, phone number, email address, date of birth, account number, password, Korean resident registration number, document issuance date, address, wallet address, and transaction hashes (TXIDs). The actual leaked items vary depending on the information provided by users during their inquiries. Coinone has not yet disclosed the number of affected users and will notify them individually or through a dedicated inquiry service in the future.
Coinone has blocked unauthorized access paths, switched external customer service to email inquiries, and enhanced monitoring of suspicious logins and transactions. The platform has reported the incident to relevant Korean regulatory authorities and urges users who provided their passwords during customer service consultations to immediately change their Coinone password and passwords for any other websites using the same credentials, while remaining vigilant against phishing calls, texts, and emails impersonating customer service. (Source: ChainCatcher)
Coinone Reports Data Breach from Customer Service Vendor Server
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Summary
On-chain news emerged on November 15 as Coinone disclosed a data breach at its customer service vendor, MetaM, compromising user information including names, phone numbers, and passwords. The incident occurred on November 12. Coinone stated that its core systems remain secure. It has suspended live chat support, transitioned to email-based assistance, and urged users to update their passwords. Amid growing concerns over inflation data, the exchange has warned of increased phishing risks and advised users to remain vigilant.
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