Critical Start Cortex XDR with MDR vs SEK Managed Detection & Response: side-by-side comparison (2026)

Critical Start Cortex XDR with MDR: MDR service layered on Palo Alto Cortex XDR for alert resolution and breach prevention. Built by Critical Start.

SEK Managed Detection & Response: AI-driven managed detection and response service with SIEM, EDR/XDR, hunting, IR, and DFIR. Built by SEK.

The table above shows where their features, integrations, deployment and company size fit differ.

Critical Start Cortex XDR with MDR is made by Critical Start. SEK Managed Detection & Response is made by SEK. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. Critical Start Cortex XDR with MDR and SEK Managed Detection & Response are both Managed Detection and Response products. Use the table above to see where features, deployment and company size fit differ.