CyberGuard dictionary / Incident Response
Security Information and Event Management
Also known as SIEM
A system that collects and analyzes security events from multiple sources.
In simple terms
A SIEM brings logs together so a team can spot patterns across systems.
Technical explanation
It ingests and normalizes events, correlates signals, and supports search and alerting; useful outcomes depend on log quality and detection design.
A SIEM's value depends on collecting the right events with reliable timestamps, retention, and context. Correlation rules need tuning so important alerts remain visible among routine activity.
Examples in practice
An alert links failed sign-ins, a successful login, and an unusual data export.
The security team joins identity logs with cloud audit events and sees a new administrator role followed by a data export. The alert includes the account and affected resource for triage.
Why it matters
Centralized events can make attacks easier to detect and reconstruct.
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Sources and further reading
Published 2026-10-15 · Last updated 2026-10-15 · CyberGuard editorial content. Source links provide context; they do not imply endorsement.