AWS Security Blog
Author: Arthur Mnev
Important changes to CloudTrail events for AWS IAM Identity Center
November 26, 2025: All changes to the CloudTrail events of IAM Identity Center described in this blog post are now deployed. December 30, 2024: In response to customer feedback, we updated the effective date for the announced changes from January 13, 2025, to July 14, 2025, and clarified that these changes apply exclusively to IAM […]
How to implement client certificate revocation list checks at scale with API Gateway
October 25, 2024: This post has been updated to include a reference to a sample implementation published on the AWS Samples GitHub repository. As you design your Amazon API Gateway applications to rely on mutual certificate authentication (mTLS), you need to consider how your application will verify the revocation status of a client certificate. In […]
Choosing the right certificate revocation method in AWS Private CA
June 25, 2025: As of Sept 28, 2022, AWS has changed the name of ACM Private CA to AWS Private CA. This post has been updated to reflect this change. AWS Private Certificate Authority (AWS Private CA) is a highly available, fully managed private certificate authority (CA) service that allows you to create CA hierarchies […]
Demystifying AWS KMS key operations, bring your own key (BYOK), custom key store, and ciphertext portability
October 4, 2024: This post has been updated to cover the following changes: FIPS 140-2 Level 3 validation of AWS Key Management Service (AWS KMS), the addition of the external key store service to AWS KMS, and FIPS 140-3 validation of AWS CloudHSM. As you prepare to build or migrate your workload on Amazon Web […]