Corelight
Network monitoring software
Cloud detection and response (CDR) software
Cloud security monitoring and analytics software
Incident response software
Security information and event management (SIEM) software
Digital forensics software
IoT security solutions
Container security tools
Intrusion detection and prevention systems (IDPS)
Network detection and response (NDR) software
Network traffic analysis (NTA) software
Cloud security software
System security software
DevSecOps software
Network security software
Monitoring software
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What is Corelight
Corelight is a network security monitoring and analytics platform that uses network telemetry derived from the open-source Zeek network security monitor to support threat detection, investigation, and incident response. It is used by security operations teams to analyze north-south and east-west traffic across on-premises networks, cloud environments, and containerized workloads. The product focuses on high-fidelity network evidence (protocol metadata, logs, and files) and provides integrations for exporting data to security analytics and response tooling.
High-fidelity network telemetry
Corelight builds on Zeek-style protocol analysis to generate rich, structured network logs that support investigations beyond basic flow records. This approach can preserve useful context (e.g., protocol fields, DNS/HTTP/TLS metadata) for triage and forensics. It is well-suited to environments where endpoint visibility is incomplete or where network evidence is required for validation.
Strong investigation and forensics support
The platform emphasizes evidence collection and workflow support for incident response, including the ability to pivot across related network artifacts. Network-derived logs can help reconstruct timelines and identify lateral movement patterns. This can complement log-centric monitoring approaches by adding packet/protocol-derived context.
Ecosystem integrations for analytics
Corelight commonly integrates with SIEM, SOAR, and data lake tooling by exporting structured telemetry for correlation and alerting. This enables organizations to use existing analytics platforms for detection engineering and reporting while relying on Corelight for network data generation. Integration-centric deployment can reduce the need to replace existing monitoring stacks.
Requires network visibility planning
Effective use depends on placing sensors where they can observe relevant traffic, which can be challenging in segmented networks and some cloud architectures. Encrypted traffic limits payload visibility, so detections often rely on metadata and behavioral signals. Organizations may need additional telemetry sources to cover blind spots.
Operational overhead and tuning
Network telemetry at scale can generate large data volumes, which affects storage, retention, and downstream analytics costs. Detection value often depends on tuning, filtering, and maintaining parsing and enrichment pipelines. Teams without dedicated security engineering resources may find time-to-value longer than with more prescriptive monitoring tools.
Not a full SIEM replacement
Corelight primarily provides network-derived security telemetry and NDR capabilities rather than serving as a complete log management and analytics platform on its own. Many deployments still require a separate system for broad log ingestion, long-term retention, and cross-domain correlation. Buyers evaluating it as an all-in-one monitoring platform may need to plan for complementary components.
Seller details
Corelight, Inc.
San Francisco, CA, USA
2013
Private
https://corelight.com
https://x.com/corelight_inc
https://www.linkedin.com/company/corelight/
