AWS guardduty documentation change

Service: guardduty · 2026-07-10 · Documentation low

File: guardduty/latest/ug/pricing-malware-protection-for-s3-guardduty.md

Summary

Added clarification about S3 API costs and EventBridge managed rule costs not being included in Free Tier.

Security assessment

Purely cost-related documentation update. No security implications or security feature changes are mentioned.

Diff

diff --git a/guardduty/latest/ug/pricing-malware-protection-for-s3-guardduty.md b/guardduty/latest/ug/pricing-malware-protection-for-s3-guardduty.md
index a22fb7e30..43dc3a383 100644
--- a//guardduty/latest/ug/pricing-malware-protection-for-s3-guardduty.md
+++ b//guardduty/latest/ug/pricing-malware-protection-for-s3-guardduty.md
@@ -37,0 +38,9 @@ For information about pricing of S3 API calls in your AWS Region, see [Requests
+Amazon S3 APIs usage cost is **not included** in the Free Tier.
+
+**EventBridge Managed Rule cost**
+    
+
+GuardDuty uses an EventBridge managed rule to detect when new objects are uploaded to your protected buckets. You will incur costs for the Amazon S3 opt-in events ingested by EventBridge. You will not incur event delivery costs. For information about EventBridge pricing, see [EventBridge pricing](https://aws.amazon.com/eventbridge/pricing/).
+
+EventBridge Managed Rule cost is **not included** in the Free Tier.
+