DefinitionMDR (Managed Detection and Response) is a managed security service in which a provider monitors the customer's environment, investigates threats and takes response actions, such as isolating an endpoint or blocking an account, instead of just sending alerts.
How it works
In MDR, the provider combines detection technology (EDR, XDR, SIEM and network and cloud sources) with a team of analysts working 24/7. The difference lies in what happens after the alert:
- Investigation of every relevant detection, with asset and user context.
- Response within rules agreed with the customer: isolating a machine, killing a process, blocking a credential.
- Threat hunting to look for signs of compromise that have not yet triggered an alert.
- Remediation guidance and follow-up until the case is closed.
MDR vs MSS
Traditional MSS (Managed Security Services) focuses on managing and monitoring devices such as firewalls and IPS, and usually ends with a notification. MDR is centered on detection and response: the provider investigates and acts. In practice, many providers offer both, but always ask: what does the service do after it detects something?
Why it matters
Seeing alerts is not the same as reducing risk. Small internal teams rarely manage to analyze everything in time, especially outside business hours. MDR shortens the time between detection and containment, the factor that weighs most on the impact of an incident. When hiring, clearly define which actions the provider can take without prior approval, how handoff to your team works and which metrics, such as MTTD and MTTR, you will receive.
Network Secure delivers MDR from its 24/7 SOC.
Frequently asked questions
What is the difference between MDR and a SOC?
A SOC is the structure of people, processes and technology that monitors and responds to threats. MDR is a service model in which a provider delivers that detection and response as a managed service, including containment actions.
Does MDR replace EDR?
No. EDR is the tool installed on endpoints; MDR is the service that uses EDR and other sources, with analysts who investigate and respond to detections.