AWS Security Blog

July 27, 2021: We’ve updated the link to the 2019 re:Invent session on this topic. Since it first launched over 10 years ago, the Amazon EC2 Instance Metadata Service (IMDS) has helped customers build secure and scalable applications. The IMDS solved a big security headache for cloud users by providing access to temporary, frequently rotated […]

There have been two noteworthy 2019 updates for Australian Prudential Regulation Authority (APRA) regulated entities such as banks, insurance companies, credit unions, deposit takers, and the superannuation industry. On June 25, APRA released an updated version of the Prudential Practice Guide CPG 234 Information Security, which provides guidance on how to implement the revised Prudential […]

October 29, 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. In this post, we’ll show you how to use the AWS Encryption SDK (“ESDK”) for […]

January 30, 2024: The API in this blog post has been changed in newer version of the AWS CRT Client. See this page for more info. January 25, 2023: AWS KMS, ACM, Secrets Manager TLS endpoints have been updated to only support NIST’s Round 3 picked KEM, Kyber. s2n-tls and s2n-quic have also been updated […]

Byron Cook leads the AWS Automated Reasoning Group, which automates proof search in mathematical logic and builds tools that provide AWS customers with provable security. Byron has pushed boundaries in this field, delivered real-world applications in the cloud, and fostered a sense of community amongst its practitioners. In recognition of Byron’s contributions to cloud security […]

Feb 17, 2025: This blog post references AWS CloudHSM Client SDK 3, which is no longer the recommended version. AWS recommends that you use the latest version, AWS CloudHSM Client SDK 5, which provides updated functionality and commands. We are currently working on an updated blog post for CloudHSM Client SDK 5. See the AWS […]

July 2, 2025: The approach in this blog post is no longer required or recommended to manage SSH keys for EC2 Instances. We instead recommend using EC2 Instance Connect that uses AWS Identity and Access Management (IAM) policies and principals to control SSH access to your instances, removing the need to share and manage SSH […]

Financial institutions across the globe use AWS to transform the way they do business. It’s exciting to watch our customers in the financial services industry innovate on AWS in unique ways, across all geos and use cases. Regulations continue to evolve in this space, and we’re working hard to help customers proactively respond to new […]

July 21, 2020: The advice about enabling Security Hub in every region where you have authorized activity was updated. AWS Security Hub is a security and compliance service that became generally available on June 25, 2019. It provides you with extensive visibility into your security and compliance status across multiple AWS accounts, in a single […]

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. August 6, 2019: We’ve made an update to clarify use cases for VPC peering. If your […]