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glossary

What is a SIEM?

The central tool a SOC uses to gather and analyze security data — the NIST definition.

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The central tool a SOC uses to gather and analyze security data — the NIST definition.

What it means

NIST defines a SIEM (Security Information and Event Management) tool as an "application that provides the ability to gather security data from information system components and present that data as actionable information via a single interface."

In practice, a SIEM collects logs and alerts from across an organization's systems so analysts can spot and investigate threats from one place.

Definitional only; not a product recommendation.

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related glossaryWhat is RHCSA?related glossaryWhat is the NICE Cybersecurity Workforce Framework?

Core source records

This table lists the page’s core content records and when they were checked. Claim-specific citations appear beside the relevant text and may not be repeated here.

IDSupportsSourceChecked
CIT-01NIST CSRC glossary — SIEM toolNational Institute of Standards and Technology — NIST CSRC Glossary — SIEM tool2026-06-15

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