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AWS fis documentation change

Service: fis · 2025-08-19 · Documentation medium

File: fis/latest/userguide/fis-tutorial-disrupt-connectivity.md

Summary

Added new 's3express' action to simulate disruption of S3 Express One Zone endpoints

Security assessment

Documents a new fault injection action for testing S3 Express connectivity resilience. While related to availability (a security pillar), there is no evidence this addresses a pre-existing security vulnerability.

Diff

diff --git a/fis/latest/userguide/fis-tutorial-disrupt-connectivity.md b/fis/latest/userguide/fis-tutorial-disrupt-connectivity.md
index bddcdfab4..6e70e1415 100644
--- a//fis/latest/userguide/fis-tutorial-disrupt-connectivity.md
+++ b//fis/latest/userguide/fis-tutorial-disrupt-connectivity.md
@@ -20,0 +21,2 @@ You can use AWS Fault Injection Service (AWS FIS) to simulate a variety of conne
+  * `s3express` – Denies traffic to and from the zonal endpoint for Amazon S3 Express One Zone in the target subnets’ AZ. Target subnets must reside in AZs where S3 Express One Zone is currently available. For more information, see [S3 Express One Zone Availability Zones and Regions.](https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-express-Endpoints.html).
+