Attic MDR vs Critical Start Cortex XDR with MDR: Side-by-Side Comparison (2026)

Attic MDR: 24/7 managed detection and response service for Microsoft 365 environments. built by Attic Security. Core capabilities include 24/7 monitoring of Microsoft 365 environments, cloud, devices, emails, files, Teams, and network connections, Real-time detection of fake Microsoft 365 login pages with red alert screens and authenticity verification, Automated incident response and threat containment when suspicious activities are detected..

Critical Start Cortex XDR with MDR: MDR service layered on Palo Alto Cortex XDR for alert resolution and breach prevention. built by Critical Start. Core capabilities include Monitoring of unlimited data volumes ingested from Cortex XDR Prevent and Pro, Resolution of all alerts regardless of severity or priority level, Coverage across endpoint, network, and cloud data sources..

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

Attic MDR differentiates with 24/7 monitoring of Microsoft 365 environments, cloud, devices, emails, files, Teams, and network connections, Real-time detection of fake Microsoft 365 login pages with red alert screens and authenticity verification, Automated incident response and threat containment when suspicious activities are detected. Critical Start Cortex XDR with MDR differentiates with Monitoring of unlimited data volumes ingested from Cortex XDR Prevent and Pro, Resolution of all alerts regardless of severity or priority level, Coverage across endpoint, network, and cloud data sources.

Attic MDR is developed by Attic Security. Critical Start Cortex XDR with MDR is developed by Critical Start. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Attic MDR integrates with Microsoft 365, Microsoft Sentinel. Critical Start Cortex XDR with MDR integrates with Palo Alto Networks Cortex XDR Prevent, Palo Alto Networks Cortex XDR Pro. Check integration compatibility with your existing security stack before deciding.

Attic MDR and Critical Start Cortex XDR with MDR serve similar Managed Detection and Response use cases: both are Managed Detection and Response tools, both cover Ransomware Prevention. Review the feature comparison above to determine which fits your requirements.