Features, pricing, ratings, and pros & cons — compared head-to-head.
Fidelis Security is a commercial extended detection and response tool by Fidelis Security. Tetragon is a free extended detection and response tool. Compare features, ratings, integrations, and community reviews side by side to find the best extended detection and response fit for your security stack.
Based on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Mid-market and enterprise teams drowning in alert fatigue will find real value in Fidelis Security's deep session inspection and AD-aware network detection, which cut false positives by correlating endpoint and network signals that most XDR platforms treat separately. The platform covers all four NIST Detect and Respond functions with particular strength in continuous monitoring and incident analysis through 300+ forensic attributes and automated response capabilities. Skip this if you need a lightweight, cloud-native XDR; Fidelis is built for organizations with the infrastructure to run hybrid deployments and the analyst headcount to operationalize deception strategies like poisoned data and decoys.
Teams running Kubernetes clusters who need visibility into system calls and process behavior without agent overhead should start with Tetragon; its eBPF foundation catches runtime anomalies at kernel level while staying free and open-source, with 4,476 GitHub stars reflecting active adoption among infrastructure-first shops. The real value is enforcement,not just logging,which means you can block suspicious syscalls in real time rather than alerting after the fact. Skip this if your threat model centers on supply chain or pre-execution detection; Tetragon is strongest on runtime containment, weakest on the Govern function.
XDR platform with NDR, EDR, deception, AD security, and CNAPP capabilities
Real-time, eBPF-based Security Observability and Runtime Enforcement component
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Common questions about comparing Fidelis Security vs Tetragon for your extended detection and response needs.
Fidelis Security: XDR platform with NDR, EDR, deception, AD security, and CNAPP capabilities. built by Fidelis Security. Core capabilities include Forensic and metadata collection from 300+ attributes, Threat detection with MITRE ATT&CK mappings, Deep Session Inspection technology..
Tetragon: Real-time, eBPF-based Security Observability and Runtime Enforcement component..
Both serve the Extended Detection and Response market but differ in approach, feature depth, and target audience.
Fidelis Security is developed by Fidelis Security. Tetragon is open-source with 4,476 GitHub stars. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.
Fidelis Security and Tetragon serve similar Extended Detection and Response use cases: both are Extended Detection and Response tools. Key differences: Fidelis Security is Commercial while Tetragon is Free, Tetragon is open-source. Review the feature comparison above to determine which fits your requirements.
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