Glossary X

XDR integrates telemetry from endpoints, networks, cloud workloads, email, and identity systems into a unified detection and response platform. By correlating signals across multiple layers, XDR reduces the time to detect multi-stage attacks that involve both endpoint and network activity. XDR is the evolution of EDR for organizations with complex, multi-surface attack landscapes.

XSS is a web security vulnerability that allows attackers to inject malicious scripts into pages viewed by other users. It occurs when applications include untrusted data in web output without proper validation or encoding. XSS can steal session tokens, redirect users, or deface websites, making it one of the OWASP Top 10 vulnerabilities.

XXE is a vulnerability in XML parsers that process external entity references, allowing attackers to read arbitrary files from the server, perform SSRF, or cause denial of service. It occurs when XML input containing a reference to an external entity is processed by a weakly configured XML parser. Prevention requires disabling external entity processing and DTD processing in XML parser configurations.