Coinone warns of phishing, identity theft after data breach

South Korean crypto exchange Coinone says an attacker breached servers at MetaM, its outsourced customer support contractor, on November 12, 2026, and may have accessed support records including names, bank account numbers, passwords and resident registration numbers. Coinone says its own trading and wallet systems were not compromised, and it has warned customers of a heightened risk of phishing and identity theft.