regulationNovember 15, 2026
Coinone reports client data leak via contractor MetaM
The South Korean crypto exchange Coinone has reported a leak of client personal data. It followed a breach of servers at contractor MetaM, which handled support requests.
The attackers may have obtained names, phone numbers, bank details, document data, passwords and crypto wallet addresses. Coinone does not disclose how many clients were affected. The exchange said it found no signs that its own platform systems were breached.
Coinone warned of phishing risks and attempts to impersonate clients using the stolen data. Users who shared passwords when contacting support were urged to change them.
If you have contacted Coinone support, keep in mind the risk of phishing messages and attempts to impersonate you. A password shared with support is best changed.