Glossary · Managed Detection and Response
MDR
A security service where someone is contractually paid to read the alerts at 3am and respond on your behalf — not just generate a dashboard.
MDR (Managed Detection and Response) is a fully-managed security service that combines endpoint and network telemetry with a 24/7 analyst team. The “managed” part is the load-bearing word: unlike a SIEM or EDR product that sends you alerts to triage yourself, an MDR provider does the triage, investigates suspicious activity, and takes contracted response actions — often inside an agreed SLA measured in minutes.
What MDR typically includes
- Telemetry collection from endpoints (EDR), identity (Microsoft 365 sign-ins, AD), and network sensors.
- Detection engineering — the rules and behavioural models that turn raw events into investigable signals.
- Tier-1 / tier-2 analyst response — humans who read the alerts and decide what’s real.
- Containment actions — isolating an endpoint, disabling an account, blocking an IP — performed on your behalf inside a contracted SLA.
- Reporting — what was seen, what was actioned, what’s trending.
How Symsafe runs MDR
Symsafe delivers MDR as part of the Secure MSA plan, built on a specialist MDR platform. The platform’s analyst pool runs 24/7 monitoring and triage, with its US-based analysts phoning Symsafe under formal SLAs when a threat is confirmed. The response is Symsafe’s: our engineers investigate, contain, and coordinate client communication and on-site response where required.
Why this matters in the breach data
The IBM Cost of a Data Breach Report 2025 found that organisations using AI and automation extensively in their security operations — the hallmark of a mature MDR — identified and contained breaches roughly 80 days faster than organisations that didn’t, and reduced the average breach cost by around USD 1.9 million. The economics are why outsourced 24/7 detection-and-response is the standard answer for SMB and mid-market.