South Korean crypto exchange Coinone warned customers of potential phishing scams and identity theft after an attacker breached servers operated by its outsourced customer support provider, MetaM. Potentially exposed data included passwords, bank account numbers, national identification numbers and crypto wallet addresses. Coinone said people who never contacted its support center were unaffected but did not disclose how many customers were affected. The exchange asked customers who shared passwords during support interactions to change them, while its account, trading and wallet infrastructure remains separate from MetaM’s servers, with no evidence of a direct compromise. The incident was reported to South Korean authorities as the country strengthens financial-sector cybersecurity, including allowing crypto exchanges to suspend withdrawals when hacking is suspected.
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