Virtual asset exchange Coinone has reported a data breach involving customer information due to a hacking attack on an external contractor responsible for customer support. The compromised data may include sensitive information such as names, phone numbers, resident registration numbers, and account numbers.
According to Coinone, an external attacker gained unauthorized access to the server of MetaM, the contractor handling customer support, around 4 a.m. on November 12. The company was notified of the incident by the contractor at approximately 9:20 a.m. the same day.
The potentially exposed information includes names, phone numbers, email addresses, dates of birth, account numbers, passwords, resident registration numbers, ID issuance dates, home addresses, cryptocurrency wallet addresses, and transaction identification numbers (TXID). However, the specific data leaked may vary by customer, and users without a customer service history are not affected by this incident.
Coinone stated that its member accounts and trading and cryptocurrency wallet systems are separate from the contractor's server, and there is no evidence of direct intrusion into its systems. The exact scale of the damage and the circumstances of the breach are under investigation, and the company plans to provide a service for customers to check the specific data that may have been leaked.
Immediately after discovering the breach, Coinone blocked the IP address used in the attack and switched customer support operations to email consultations. The incident has also been reported to the Korea Internet & Security Agency (KISA), the Personal Information Protection Commission, and the Financial Supervisory Service.
A Coinone representative stated, "We take this incident very seriously and will thoroughly review and strengthen the security management systems of both our company and our partners. We feel a deep sense of responsibility regarding this incident and sincerely apologize to our customers."
* This article has been translated by AI.
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