South Korea’s financial market watchdog said it will increase supervision and review whether affected firms disclosed breaches and had adequate safeguards after recent data-security incidents, naming Upbit among the concerns. Regulators emphasized investor-protection measures amid ongoing probes into multiple breaches.

On December 1, 2025, Reuters reported that South Korea’s financial regulator announced stepped-up scrutiny of retail investor protection following a series of recent data-security incidents affecting several firms, with public mention of Upbit among entities of concern. The regulator said it will investigate whether companies properly disclosed cybersecurity risks, maintained adequate data defenses, and complied with notification and remediation obligations. Officials signaled potential enforcement actions or policy changes if reviews find failures in governance, incident response, or investor communication. The announcement reflects heightened supervisory focus as authorities balance market stability, consumer protection, and rapid innovation in crypto and fintech services. Market analysts noted that breaches erode retail confidence and can trigger both capital outflows and stricter disclosure requirements. The watchdog also indicated plans to coordinate with other agencies to ensure cross-sector information sharing and to issue clearer guidance on security controls for firms handling sensitive investor data.