English 
Mitsui & Co. Secure Direction, Ltd. will begin offering the ” MBSD-SOC Proactive Hunt ” service to customers using the MBSD-SOC service, following the release of its ” Threat Hunting” service on September 30, 2026.
This service proactively searches for latent cyber threats and signs of compromise, and supports continuous improvement of detection capabilities by feeding back the insights gained from hunting into SOC operations (by adding monitoring target rules).
In recent years, cyberattacks have increasingly employed methods that exploit legitimate tools, such as living off the land tactics, and employ long-term, stealthy techniques. This makes it difficult to detect threats through traditional security monitoring centered on alerts from security devices and services. In this context, the Cybersecurity Strategy, approved by the Cabinet in December 2025, and Cybersecurity 2026, decided in July 2026, position strengthening the ability to respond to increasingly serious cyber threats as important measures. Furthermore, the Basic Policy on Promoting and Implementing Threat Hunting, also decided in the same month, highlights the importance of threat hunting—actively searching for threats that are difficult to identify with conventional measures alone.
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Based on this trend, MBSD will begin offering the “MBSD-SOC Proactive Hunt” service to customers currently using the MBSD-SOC service.
出典： PRTimes
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