WIP: Document global known-good indicators

hugo/config/_default/menus/main.en.yaml

@@ -7891,11 +7891,16 @@ menu:
       parent: cloud_siem_ingest_and_enrich
       identifier: cloud_siem_threat_intelligence
       weight: 102
+    - name: Global Known-Good Indicators
+      url: security/cloud_siem/ingest_and_enrich/global_known_good_indicators
+      parent: cloud_siem_ingest_and_enrich
+      identifier: cloud_siem_global_known_good_indicators
+      weight: 103
     - name: Open Cybersecurity Schema Framework
       url: security/cloud_siem/ingest_and_enrich/open_cybersecurity_schema_framework
       parent: cloud_siem_ingest_and_enrich
       identifier: cloud_siem_open_cybersecurity_schema_framework
-      weight: 103
+      weight: 104
     - name: OCSF Processor
       url: security/cloud_siem/ingest_and_enrich/open_cybersecurity_schema_framework/ocsf_processor
       parent: cloud_siem_open_cybersecurity_schema_framework

hugo/content/en/security/cloud_siem/ingest_and_enrich/global_known_good_indicators.md

@@ -0,0 +1,60 @@
+---
+title: Global Known-Good Indicators
+description: "Learn how Datadog-managed known-good indicators reduce false-positive threat intelligence matches in Cloud SIEM."
+further_reading:
+- link: /security/threat_intelligence/
+  tag: documentation
+  text: Threat Intelligence
+- link: /security/cloud_siem/ingest_and_enrich/threat_intelligence/
+  tag: documentation
+  text: Bring Your Own Threat Intelligence
+- link: /security/cloud_siem/triage_and_investigate/ioc_explorer/
+  tag: documentation
+  text: IOC Explorer
+---
+
+## Overview
+
+Datadog maintains a global list of known-good indicators for Cloud SIEM. These indicators identify infrastructure or artifacts that Datadog has determined should not be treated as threatening, even when they appear in a third-party threat intelligence feed.
+
+When an incoming log contains an exact match for a global known-good indicator, Cloud SIEM prevents that match from being treated as a threat intelligence finding. This reduces false positives from broadly benign infrastructure while preserving the original log for investigation.
+
+Global known-good indicators are managed by Datadog. You cannot add, remove, or configure these entries for your organization.
+
+## How global known-good indicators work
+
+**Flow**: Incoming log → global known-good check in Cloud SIEM log processing → threat intelligence enrichment → known-good matches are not treated as threat intelligence findings.
+
+Cloud SIEM evaluates global known-good indicators while it enriches incoming logs with threat intelligence:
+
+1. Cloud SIEM extracts supported indicators from the log.
+1. Cloud SIEM checks for an exact match against the Datadog-managed known-good list.
+1. If an indicator is known good, Cloud SIEM does not treat it as a threat intelligence finding.
+1. The original log remains available in Log Explorer for correlation and investigation.
+
+Global known-good indicators affect new logs after the list has propagated through Cloud SIEM processing. They do not change enrichment that was already stored on historical logs.
+
+## Supported indicators and matching
+
+Global known-good indicators support exact matches for:
+
+- IP addresses
+- Domains
+- SHA-256 file hashes
+
+The known-good list does not use partial domains, wildcard patterns, or CIDR ranges.
+
+## Use global known-good indicators during investigations
+
+Global known-good indicators reduce noise from known false-positive threat intelligence matches. They do not exclude logs from ingestion, retention, or other security analysis.
+
+Continue to investigate relevant log context, detections, and behavioral evidence. An indicator that is known good in one context can still be associated with suspicious activity in another context.
+
+For information about Datadog-curated threat intelligence, see [Threat Intelligence][1]. To add organization-managed threat intelligence, see [Bring Your Own Threat Intelligence][2].
+
+## Further reading
+
+{{< partial name="whats-next/whats-next.html" >}}
+
+[1]: /security/threat_intelligence/
+[2]: /security/cloud_siem/ingest_and_enrich/threat_intelligence/