Assessing SIEM effectiveness

This report outlines a methodology for assessing and improving SIEM effectiveness, highlighting common pitfalls such as incomplete source inventory and coverage, gaps in event flow and normalization, inadequate detection logic coverage, excessive false positives, missing IoC integrations, and outdated configurations. Using Kaspersky SIEM examples and queries, it provides practical checks to identify these issues and recommends ongoing audits, structured processes, and continuous updates to maintain effective threat detection and SOC operations.