Extended Detection and Response (XDR)
Definition
Extended Detection and Response is a security approach that collects and correlates signals from multiple control areas, such as endpoints, identity, email, cloud, and network, to detect threats and support faster response. XDR aims to connect related activity into clearer incidents so teams can investigate and contain attacks more effectively.
Examples
- An XDR platform links a phishing email to a suspicious login and then to unusual endpoint behavior, showing one connected attack chain.
- A security analyst uses XDR to isolate an infected laptop while also blocking the attacker’s identity session and disabling malicious email forwarding rules.
Discover 🔎
Modern attacks rarely stay in one place. An attacker might start with phishing, move into email, steal credentials, access cloud resources, and then execute malware on an endpoint. If each security tool shows only its own small view, it is easy to miss the bigger picture or waste time stitching clues together.
XDR exists to solve this by bringing signals together and presenting them as connected stories. Instead of dozens of isolated alerts, the goal is a smaller number of higher-quality incidents that show what happened, how it spread, and what to do next.
Tip: The interactive version includes progress tracking, decks, and premium deep dives.