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Security Operations · Advanced

Security Data Lake

A centralized repository that stores large volumes of raw and normalized security telemetry for analytics and long-term retention.

Definition

Security data lakes decouple storage from analytics, allowing cheaper retention and querying with multiple tools. Examples include Amazon Security Lake, Microsoft Sentinel data lake and Snowflake-based security analytics. They complement or replace traditional SIEM storage.

Example

Retaining two years of DNS and proxy logs in a data lake for threat hunting.

Exam tip

Data lakes address SIEM storage cost; analytics and detection still require tooling.

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