Mastering OSSEC HIDS for Real-Time Threat Detection requires a strong understanding of its open-source, server-agent architecture, custom decoding engines, and automated response mechanisms. OSSEC (Open Source Security Event Correlator) is a premier Host-based Intrusion Detection System (HIDS) utilized to achieve deep visibility into server endpoints by processing system logs, monitoring file changes, and stopping active exploits. Core Functional Pillars
OSSEC combines several security utilities into a unified, lightweight framework: Practical Intrusion Detection with OSSEC – Course Overview
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