Cybereason XDR vs Fidelis Security: Side-by-Side Comparison (2026)

Cybereason XDR: XDR platform correlating multi-source telemetry into attack stories (MalOps). built by Cybereason. Core capabilities include MalOp attack story correlation, Multi-source telemetry integration (65+ sources), XDR Dashboard with MITRE classification..

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..

Both serve the Extended Detection and Response market but differ in approach, feature depth, and target audience.

Cybereason XDR differentiates with MalOp attack story correlation, Multi-source telemetry integration (65+ sources), XDR Dashboard with MITRE classification. Fidelis Security differentiates with Forensic and metadata collection from 300+ attributes, Threat detection with MITRE ATT&CK mappings, Deep Session Inspection technology.

Cybereason XDR is developed by Cybereason. Fidelis Security is developed by Fidelis Security. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Cybereason XDR and Fidelis Security serve similar Extended Detection and Response use cases: both are Extended Detection and Response tools, both cover MITRE Attack. Review the feature comparison above to determine which fits your requirements.