AWS Security Blog

Category: Top Posts

Top 10 security items to improve in your AWS account

If you’re looking to improve your cloud security, a good place to start is to follow the top 10 most important cloud security tips that Stephen Schmidt, Chief Information Security Officer for AWS, laid out at AWS re:Invent 2019. Below are the tips, expanded to help you take action. 1) Accurate account information When AWS […]

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How to define least-privileged permissions for actions called by AWS services

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. February 21, 2020: We fixed a missing comma in a policy example. March 3, 2020: […]

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Automated Response and Remediation with AWS Security Hub

June 2, 2021: The instructions in this blog post have been implemented in an AWS Solution, AWS Security Hub Automated Response and Remediation, that includes remediations for more than 20 security controls. To learn more about implementing the solution, see How to deploy the AWS Solution for Security Hub Automated Response and Remediation. AWS Security […]

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How to Restrict Amazon S3 Bucket Access to a Specific IAM Role

April 2, 2021: In the section “Granting cross-account bucket access to a specific IAM role,” we’ve updated the second policy to fix an error. I am a cloud support engineer here at AWS, and customers often ask me how they can limit Amazon S3 bucket access to a specific AWS Identity and Access Management (IAM) […]

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Writing IAM Policies: Grant Access to User-Specific Folders in an Amazon S3 Bucket

Many of you have asked how to construct an AWS Identity and Access Management (IAM) policy with folder-level permissions for Amazon S3 buckets. This week’s guest blogger Elliot Yamaguchi, Technical Writer on the IAM team, will explain the basics of writing that type of policy. To show you how to create a policy with folder-level […]

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