A Buyer’s Guide for CISOs: How to Choose the Best MDR Partner
Choosing an MDR partner is one of the higher-stakes procurement decisions a CISO makes. This buyer’s guide gives you the framework: the questions to ask, the metrics that actually mean something, and the proof points to demand before signing.
- The five categories of MDR maturity — and how to score a vendor on each
- The questions to put in your RFP (and the answers you should expect)
- The metrics that actually predict outcomes vs. vanity numbers
- How to evaluate response capability, not just detection
- Contract terms and SLA language that protect you
The category is crowded. The capability isn’t.
Every provider in the managed security market now markets MDR. The category has become a label rather than a capability. The result for buyers: similar-sounding offerings that deliver radically different outcomes — and the difference doesn’t show up in the slide deck. It shows up six months in, when an incident actually lands. This guide is built to surface that difference during procurement, not after.
Score every vendor on the same scale.
Level 1 — Alert forwarding. The provider operates a SIEM and emails you when correlation rules fire. This is monitoring, not MDR.
Level 2 — Managed EDR. The provider operates your endpoint platform. Better than nothing, but limited to endpoint telemetry.
Level 3 — Multi-source detection. The provider ingests endpoint, network, identity, and cloud telemetry into a unified pipeline. Detection content tuned to your environment.
Level 4 — Detection & response. Provider has documented response actions, authority to execute them within agreed boundaries, and accountability for time-to-contain.
Level 5 — Posture-aware operations. Detection and response operations connected to posture intelligence — identity, AI, cloud, and threat exposure — so the program continuously improves its own coverage.
The fifteen questions that separate categories.
1. What is your mean time to detect and to contain, measured across your full customer base? 2. Show me a real (anonymized) detection report from the last 30 days. 3. What response actions can you take without escalating to my team, and which require approval? 4. Who writes detection content — internal team or third-party? 5. How do you tune detections to my environment, and on what cadence? 6. What is the tenure of your analyst team, and what is the average case load per analyst? 7. What integrations do you have with my existing stack — and what coverage do I lose without them? 8. Show me your incident-response runbook for a ransomware scenario. 9. What is your service credit structure if you miss SLA? 10. What happens to my data if we terminate? 11. Are you platform-agnostic, or tied to a specific SIEM/EDR/SOAR? 12. Show me your MITRE ATT&CK coverage map. 13. What threat intelligence sources do you use, and how do they feed detection? 14. How do you measure and report effectiveness back to the customer? 15. What does a customer reference call sound like 12 months in — not 30 days in?
Built to score well on every question above.
Digital Hands’ Managed Detection & Response service operates at Level 5 — detection and response connected to continuous posture intelligence across the four USPM pillars. Platform-agnostic. Co-managed. Analyst tenure at twice industry average. Recognized at RSAC for innovation. We’ll walk you through our answers to all fifteen questions on a single call.