# Coinone Says Customer-Support Contractor’s Server Was Hacked

By Simon Yoon

Canonical URL: https://www.tokenpost.com/news/technology/57766
Published: 2026-11-15T10:36:41.000Z
Updated: 2026-11-15T10:36:41.000Z
Section: Technology

> The potential exposure includes passwords and identity details. Coinone said its account, trading and wallet systems were separate from the contractor’s server.

Coinone said an attack on its customer-support contractor may have exposed 11 types of customer data, including bank details and South Korean resident registration numbers, raising the risk of targeted impersonation scams.

Coinone said an unauthorized party accessed MetaM’s server around 2 p.m. ET Wednesday, Nov. 11 (19:00 UTC). MetaM notified the exchange at about 7:20 p.m. ET (Nov. 12, 00:20 UTC), the exchange said.

The potentially exposed records came from phone and online support conversations. The 11 categories include names, phone numbers, email addresses, birth dates, bank account details, passwords, home addresses, wallet addresses, transaction IDs, South Korean resident registration numbers and ID issue dates. The information varies by customer and conversation. Coinone has not disclosed how many customers may be affected, and said people who never contacted its support center are outside the incident’s scope.

Coinone said its member accounts, trading systems and virtual asset wallets were separate from MetaM’s server, with no signs of direct access to those systems. It moved outsourced support to email-only service, blocked the unauthorized access route and notified South Korean authorities.

The exchange plans to provide a tool for customers to check which information may be affected. Coinone warned that details from support conversations could be used in impersonation attempts and urged customers to watch for suspicious calls, emails and texts and change passwords they shared with support.