When an MSSP detects something suspicious, they send you an alert and your team investigates. When an MDR provider detects something, their analysts investigate and take action directly, isolating endpoints, disabling accounts, or containing the threat before calling you.
Side-by-side comparison
| Dimension | MSSP | MDR |
|---|---|---|
| Core function | Monitor & alert | Detect, investigate & respond |
| Response | Your team responds | Their team responds |
| Investigation | Minimal triage | Deep investigation per alert |
| Alert volume | High, you handle false positives | Low, they filter noise |
| Threat hunting | Rarely included | Often included |
| Price (per EP/mo) | $3–15 | $8–35 |
| Internal team needed | Yes, to respond to alerts | Minimal, provider handles response |
When to choose MSSP
- You have a capable internal security team that handles response
- You need log management and compliance reporting (e.g., SIEM management)
- Budget is limited and you can accept alert-based operations
- You need broad coverage of infrastructure (firewalls, VPN, etc.) beyond endpoints
When to choose MDR
- You don't have (or can't staff) a 24/7 security team
- You want someone to take action during incidents, not just alert you
- Alert fatigue is killing your team's effectiveness
- You need detection quality (fewer false positives, faster investigation)
The real cost comparison
MSSP is cheaper per endpoint, but factor in the internal cost: you need analysts to investigate alerts, triage false positives, and execute response. An MSSP generating 50 alerts/day at $5/endpoint can cost more than MDR at $20/endpoint once you count the salary of analysts needed to work those alerts.
FAQ
What is the main difference between MDR and MSSP?
MSSP monitors your security tools and sends you alerts. MDR detects threats, investigates them, and takes response actions on your behalf.
Is MDR more expensive than MSSP?
Generally yes per endpoint, but MDR reduces internal team burden. Factor in the cost of analysts needed to respond to MSSP alerts.
Can I use both MDR and MSSP?
It's uncommon. Some organizations use MSSP for compliance-driven log management while MDR handles detection and response.