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Training Camp • Cybersecurity Glossary
A security data lake is a scalable repository storing raw security telemetry for long-term retention, threat hunting, and analytics beyond traditional SIEM limits.
Security Data Lake Definition: A security data lake is a scalable repository storing raw security telemetry for long-term retention, threat hunting, and analytics beyond traditional SIEM limits.
A security data lake is a centralized, highly scalable repository that ingests and retains large volumes of raw, structured and unstructured security telemetry from diverse sources such as logs, network flows, EDR events, and cloud audit trails. By decoupling low-cost long-term storage from analytics, it supports extended retention, threat hunting, and machine-learning-driven detection that traditional SIEMs constrain due to cost and indexing limits. Many organizations pair a security data lake with a SIEM or use emerging schemas like the Open Cybersecurity Schema Framework to normalize data for query.
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