Who is Corelight?
Corelight is a cybersecurity company that delivers Network Detection and Response (NDR) platforms derived from open-source network security technologies for enterprise and public sector environments.
- NDR platforms for Security Operations (SecOps) teams.
- Sensor-based monitoring for on-premises (on-prem), cloud, and hybrid network environments.
- Use of open-source technologies such as Zeek and Suricata for deep network traffic analysis.
- Integrations with Security Information and Event Management (SIEM), SOC, and incident response workflows.
- Threat hunting, forensics, and compliance support through rich network telemetry.
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More About Corelight
Corelight focuses on NDR solutions that convert network traffic into structured security telemetry for use by SecOps centers (SOCs), incident response teams, and threat hunters. Its platforms are designed for organizations that require detailed visibility into east-west and north-south traffic across data center, campus, branch, and cloud networks.
The company’s offerings are based on open-source technologies such as Zeek (network security monitoring) and Suricata (IDS/IPS engine), which are widely used for Deep Packet Inspection (DPI) and protocol parsing. Corelight packages and operationalizes these technologies into enterprise-ready sensor appliances and virtual or cloud-native deployments that can be positioned at network aggregation points, taps, or span ports. The sensors generate metadata-rich logs and alerts rather than retaining full packet captures by default, which can support scalable monitoring in high-throughput environments.
Corelight’s NDR platforms (network security) integrate with common SIEM tools, Security Orchestration Automation Response (SOAR) platforms, and case management systems, allowing analysts to correlate network-derived evidence with endpoint, identity, and log data. Output typically includes protocol-specific logs, file extraction, and detection alerts that map to tactics, techniques, and procedures often aligned with frameworks such as MITRE ATT&CK. This design supports workflows for incident triage, root-cause investigation, and retrospective hunting.
For cloud and modern infrastructure, Corelight supports deployment in public cloud environments and containerized or virtualized infrastructures, enabling inspection of traffic in VPCs or virtual networks. This places the company in marketplace categories such as NDR (security operations), network security monitoring (observability and security), and threat hunting and forensics tooling (security analytics).
Enterprises and institutions use Corelight where compliance requirements, regulated workloads, or high-value assets demand detailed network visibility. The combination of Zeek- and Suricata-based analytics, structured telemetry, and integrations with existing SOC tooling positions Corelight as a network-centric component within broader security architectures that may also include Endpoint Detection And Response (EDR), firewalls, and identity security platforms.
Our description of Corelight. Updated December 2025.
