Assessing SIEM effectiveness

Assessing SIEM effectiveness is essential because a SIEM’s value hinges on its configuration and the data sources it connects to, with its impact evolving as infrastructure and attacker techniques change. According to the article, the assessment draws on an examination of Kaspersky SIEM effectiveness, using examples and methods that can be extrapolated to other SIEMs, and is intended to help identify issues and offer optimisation options.

The methodology involves collecting and analysing documentation, interviewing engineers and analysts, and granting read‑only access to gather factual data on configuration, data flows, and detection logic, followed by a set of recommendations that can be implemented promptly or require broader process changes. The piece categorises common issues into performance, efficiency and detection problems, and stresses the need for ongoing auditing of event sources, normalization, detection logic, and integrations.

Written by Andrey Tamoykin, it also emphasises that a SIEM must be kept up to date and continuously evolved; the article was published on 23 December 2025.