This checklist provides a structured framework for evaluating SIEM effectiveness by focusing on ten critical areas, including data protection, scalability, data collection, pricing, uptime, and data ownership. It emphasizes that not all data contributes equally to detection and introduces Outcomes Navigator as a tool to map log sources to MITRE ATT&CK techniques and real detection use cases. The guide helps security leaders identify coverage gaps, optimize data usage, and ensure that SIEM investments drive meaningful security outcomes rather than just data storage. By aligning detection capabilities with business priorities, organizations can improve threat visibility, reduce unnecessary costs, and strengthen overall security operations performance.

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