What Is MXDR?
Managed Extended Detection and Response (MXDR) is a 24×7 security service that monitors, detects, and responds to threats across your entire IT environment, not just your endpoints.
Where traditional endpoint protection watches individual devices, MXDR correlates signals from endpoints, networks, cloud platforms, identity systems, and email into a single, continuous view. When something looks wrong, a security analyst investigates and responds, not just sends an alert.
MXDR vs. MDR: What's the Difference?
MDR (Managed Detection and Response) is built around endpoint protection. It's effective, but it has a limited field of view. An attack that moves through email, then cloud credentials, then an endpoint looks like three separate events to an MDR tool. MXDR sees the full picture.
MXDR pulls telemetry from every layer of your environment and correlates it in one place. That means a phishing email, a compromised account, and a lateral movement attempt get connected into a single incident, with a coordinated response across all three.
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Expert-Led, Around the Clock
MXDR is not a tool you manage yourself. STACK's security operations team handles continuous monitoring, alert triage, threat investigation, and incident response on your behalf. When a threat surfaces, we act, not just notify.
What MXDR Covers
Most security incidents don't stay in one place. Attackers move laterally, abuse credentials, and exploit gaps between tools that don't talk to each other. MXDR closes those gaps by monitoring across every layer of your environment from a single security operations center.
Endpoints
Continuous monitoring of workstations, laptops, and servers for malicious processes, behavioral anomalies, and indicators of compromise.
Network Traffic
Analysis of network activity to detect lateral movement, command-and-control communication, and traffic patterns that indicate active intrusion.
Cloud Environments
Visibility into cloud platforms and SaaS applications, catching misconfigurations, unauthorized access, and threats that bypass on-premises controls entirely.
Identity & Access
Monitoring of authentication events and identity systems to detect credential abuse, account takeovers, and privilege escalation before they cause damage.
Detection of advanced email-based threats including business email compromise, targeted phishing, and malicious attachments that evade standard filtering.
Threat Intelligence
Real-time intelligence feeds inform detection across all layers, allowing the security operations team to recognize attack patterns and actor tactics as they emerge globally.
Detection Is Only Half the Job
Many security tools detect threats and stop there. MXDR goes further. When a credible threat is identified, STACK's analysts don't just alert you and wait. Depending on the nature of the incident, response actions include isolating affected systems, blocking malicious traffic, revoking compromised credentials, and guiding your team through containment.
Automated response handles low-risk events quickly. Higher-risk incidents get immediate analyst attention, with a coordinated response that spans every affected layer of your environment.
Alert Triage
Security analysts review and validate every alert, filtering out false positives and focusing response effort on real threats.
Threat Correlation
Signals from endpoints, network, identity, and cloud are connected into a single incident view so nothing is missed across different layers.
Containment
Affected systems, accounts, or network segments are isolated promptly to stop the spread of an incident while investigation continues.
Remediation & Recovery
After containment, STACK works with your team to remove threats, restore affected systems, and close the gaps that allowed the incident to occur.
Stronger Together with Managed IT
MXDR is included in STACK's Managed Service Advanced tier, meaning detection and response operates as part of a fully managed IT engagement rather than a standalone product. Your security operations team already knows your environment, your users, and your infrastructure because they help manage it.
That context matters. When something looks unusual, the difference between a false positive and a real threat often comes down to knowing what normal looks like for your specific environment. That's harder to do when your security provider has never seen your network before.
Learn About Managed IT Services
Ready to Close Your Security Gaps?
If your current security coverage stops at the endpoint, there are likely threats moving through the rest of your environment without anyone watching. STACK can assess where your gaps are and walk you through what a managed detection and response engagement actually looks like for a business your size.
Not sure where to start? A Security Risk Assessment gives both of us a clear picture of your current exposure before any commitment.