XDR

What Is XDR?

XDR, or Extended Detection and Response, is an integrated security framework that collects and correlates threat data across multiple layers of an organization's environment — including endpoints, networks, cloud workloads, email, and identity systems. By unifying visibility across these sources into a single platform, XDR enables security teams to detect, investigate, and respond to threats faster and more effectively than siloed tools allow.

Description

XDR extends the capabilities of EDR (Endpoint Detection and Response) by pulling in telemetry from a broader set of security controls. Rather than requiring analysts to manually correlate alerts from separate tools, XDR stitches that data together automatically, reducing noise and surfacing high-fidelity detections. It is designed to improve both detection accuracy and response speed, particularly in complex, multi-environment infrastructures.

Usage and Examples

An organization running XDR might detect that a suspicious login attempt on their identity platform correlates with unusual outbound traffic on the network and a malicious email that was delivered earlier that day — context that would be difficult to assemble manually from three separate tools. XDR platforms are offered by vendors such as Microsoft, CrowdStrike, Palo Alto Networks, and SentinelOne, and are often considered a step beyond traditional SIEM for organizations that need tighter integration between detection and response workflows.