Open Source Security Information Management by AlienVault (now AT&T Cybersecurity). It acts as a SIEM (Security Information and Event Management) platform that:
Automatically blocking threats (e.g., firewalling a malicious IP) in real time. OSSEC & OSSIM Unified Open Source Security
Collects events from OSSEC agents and other network tools (like Snort or OpenVAS). OSSEC & OSSIM Unified Open Source Security
AlienVault OSSIM Reviews & Ratings 2026 | Gartner Peer Insights OSSEC & OSSIM Unified Open Source Security
Combining and OSSIM creates a powerful, unified open-source security architecture that bridges the gap between deep host-level monitoring and centralized security management. Together, they provide a cost-effective alternative to expensive commercial security suites for organizations needing robust intrusion detection and compliance. Core Components & Synergy