Category: Amazon Simple Storage Service (S3)

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. December 4, 2023:We’ve updated the new Amazon CloudFront security feature Origin Access Control in place of the Origin Access Identity. December 14, 2021:The code in […]

January 25, 2024: The path of the bucket was updated in this post. In April 2021, AWS Identity and Access Management (IAM) Access Analyzer added policy generation to help you create fine-grained policies based on AWS CloudTrail activity stored within your account. Now, we’re extending policy generation to enable you to generate policies based on […]

October 13, 2021: We’ve added a section on redacting and transforming personally identifiable information with Amazon S3 Object Lambda. In this post, we describe the AWS services that you can use to both detect and protect your data stored in Amazon Simple Storage Service (Amazon S3). When you analyze security in depth for your Amazon […]

August 31, 2021: AWS KMS is replacing the term customer master key (CMK) with AWS KMS key and KMS key. The concept has not changed. To prevent breaking changes, AWS KMS is keeping some variations of this term. More info. May 26, 2021: In the section “Secure your tags using an AWS Organizations service control […]

AWS Identity and Access Management (IAM) Access Analyzer helps you monitor and reduce access by using automated reasoning to generate comprehensive findings for resource access. Now, you can preview and validate public and cross-account access before deploying permission changes. For example, you can validate whether your S3 bucket would allow public access before deploying your […]

Most businesses collect, process, and store sensitive customer data that needs to be secured to earn customer trust and protect customers against abuses. Regulated businesses must prove they meet guidelines established by regulatory bodies. As an example, in the capital markets, broker-dealers and investment advisors must demonstrate they address the guidelines proposed by the Office […]

February 5, 2026: Amazon S3 now supports the UpdateObjectEncryption API so you can atomically update the server-side encryption type of existing encrypted objects from server-side encryption with S3 managed encryption (SSE-S3) to server-side encryption with AWS Key Management Service (AWS KMS) encryption keys (SSE-KMS). Read the documentation. November 1, 2021: AWS KMS is replacing the […]

September 28, 2023: IAM is incrementally adding support for actions from more services. For a list of services that report action last accessed information, see IAM action last accessed information services and actions. Customers tell us that when their teams and projects are just getting started, administrators may grant broad access to inspire innovation and […]

February 19, 2024: You can now use IAM Access Analyzer to easily identify unused roles. Read this blog post to learn more. January 6, 2021: We updated this post to fix a bug related to allow listing noncompliant roles. January 6, 2020: We updated this post to reflect a valid STS session duration if configured […]

Amazon S3 provides comprehensive security and compliance capabilities that meet even the most stringent regulatory requirements. It gives you flexibility in the way you manage data for cost optimization, access control, and compliance. However, because the service is flexible, a user could accidentally configure buckets in a manner that is not secure. For example, let’s […]