Glossary
XDR
XDR sees the whole picture. Instead of separate tools watching endpoints, network, and cloud, XDR combines everything to catch attacks that span multiple systems.
What is XDR?
Extended Detection and Response - security tool that integrates data from endpoints, networks, cloud, and other sources for unified threat detection.
Why Should You Care?
Attackers execute multi-stage campaigns across endpoints, email, identity, and network layers—and traditional siloed tools miss the connections between them. XDR correlates signals from phishing emails, endpoint malware execution, identity anomalies, and C2 callbacks into a single incident, enabling security teams to detect attacks faster and contain them before lateral movement spreads. Without XDR, security teams manually piece together fragments of attacks, allowing sophisticated threats to succeed during the investigation delay.
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Real-World Example
In a typical XDR-detected attack, malware arrives via phishing email, and the system immediately correlates the email alert with the suspicious endpoint process execution, identity sign-in anomaly, and C2 callback to an external server. XDR automatically isolates the compromised endpoint, blocks the C2 IP at the firewall, and disables the compromised user account across the organization—all from one unified incident view, stopping the attacker's lateral movement before it spreads to additional systems.
How to Protect Against XDR
- 1.
Evaluate XDR as EDR replacement/upgrade
- 2.
Ensure XDR integrates with existing tools
Related Terms
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