endpoint updates

Author: natasha-moore-elastic

release-notes/elastic-security/index.md

@@ -140,10 +140,17 @@ To check for security updates, go to [Security announcements for the Elastic sta
 
 ### Features and enhancements [elastic-security-9.0.5-features-enhancements]
 * Adds the `detection_rule_upgrade_status` object to snapshot telemetry schema [#223086]({{kib-pull}}223086).
-* To help identify which parts of `elastic-endpoint.exe` are using a significant amount of CPU, {{elastic-defend}} on Windows can now include CPU profiling data in diagnostics. To request CPU profiling data using the command line, refer to [{{agent}} command reference](/reference/fleet/agent-command-reference.md#_options). To request CPU profiling data using {{kib}}, check the **Collect additional CPU metrics** box when requesting {{agent}} diagnostics.
+* Reduces {{elastic-defend}} CPU when processing events from the System process on Windows.
+* Allows {{elastic-defend}} to automatically recover in some situations when it loses connectivity with {{agent}}.
+* Shortens the time it takes {{elastic-defend}} to recover from a `DEGRADED` status caused by communication issues with {{agent}}.
+* Due to an issue in macOS, {{elastic-defend}} would sometimes send network events without `user.name` populated. {{elastic-defend}} will now identify these events and populate `user.name` if necessary.
+* Reduces {{elastic-defend}} CPU usage for ETW events, API events, and Behavioral Protections. In some cases, this may be a significant reduction.
+
 
 ### Fixes [elastic-security-9.0.5-fixes]
 * Fixes a bug where Security AI Assistant settings landed on the wrong page for users on the Basic license  [#229163]({{kib-pull}}229163).
+* Fixes an issue in {{elastic-defend}} performance metrics that resulted in `endpoint_uptime_percent` always being 0 for behavioral rules.
+* Fixes an issue in {{elastic-defend}} that could result in a crash if a {{ls}} output configuration is specified containing a certificate that cannot not be parsed.
 
 ## 9.0.4 [elastic-security-9.0.4-release-notes]