Corelight

Corelight is a network security tool for threat detection and network traffic analysis. Built on the open Zeek framework, it helps SOC teams gain deep visibility into network activity, spot attacks faster, and respond to incidents with better context.

What Corelight is used for

• Detecting suspicious network behavior and anomalies in real time
• Packet and protocol analysis for investigations and incident response
• Feeding high-fidelity network telemetry into SIEM and security analytics tools
• Scaling network monitoring across large enterprise environments

Strengths and limitations

• Fast threat detection based on detailed network traffic analysis
• Scales for cloud and on-prem deployments
• Integrates with other security products to extend workflows
• Includes training resources and specialist support
• Can be expensive for smaller organizations
• Requires learning Zeek concepts and analytics workflows
• Some use cases may require specialized hardware

Practical tips

• Keep analysis rules and detections up to date
• Integrate with your SIEM to centralize alerts and investigations
• Configure alerts for critical events and tune them over time
• Track Zeek core updates to maintain security and compatibility