AWS Security Blog

Tag: S3

Preventing unintended encryption of HAQM S3 objects

March 18, 2025: This post was updated to include additional guidance around monitoring and detection. January 17, 2025: We updated this post to highlight the importance of using short-term credentials to mitigate the risk of unauthorized techniques such as the one detailed in this blog. At HAQM Web Services (AWS), the security of our customers’ […]

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

Mar 25, 2024: We have fixed the JSON code examples which caused errors by replacing the curly quotes with straight quotes. November 14, 2023: We’ve updated this post to use IAM Identity Center and follow updated IAM best practices. In this post, we discuss the concept of folders in HAQM Simple Storage Service (HAQM S3) […]

IAM Policies and Bucket Policies and ACLs! Oh, My! (Controlling Access to S3 Resources)

September 11, 2023: This post has been updated. Updated on July 6, 2023: This post has been updated to reflect the current guidance around the usage of S3 ACL and to include S3 Access Points and the Block Public Access for accounts and S3 buckets. Updated on April 27, 2023: HAQM S3 now automatically enables […]

Use HAQM Macie for automatic, continual, and cost-effective discovery of sensitive data in S3

Customers have an increasing need to collect, store, and process data within their AWS environments for application modernization, reporting, and predictive analytics. AWS Well-Architected security pillar, general data privacy and compliance regulations require that you appropriately identify and secure sensitive information. Knowing where your data is allows you to implement the appropriate security controls which […]

Export historical Security Hub findings to an S3 bucket to enable complex analytics

AWS Security Hub is a cloud security posture management service that you can use to perform security best practice checks, aggregate alerts, and automate remediation. Security Hub has out-of-the-box integrations with many AWS services and over 60 partner products. Security Hub centralizes findings across your AWS accounts and supported AWS Regions into a single delegated […]

Top 10 security best practices for securing data in HAQM S3

With more than 100 trillion objects in HAQM Simple Storage Service (HAQM S3) and an almost unimaginably broad set of use cases, securing data stored in HAQM S3 is important for every organization. So, we’ve curated the top 10 controls for securing your data in S3. By default, all S3 buckets are private and can […]

In Case You Missed Them: Some Recent Security Enhancements in AWS

With the steady cadence of updates and enhancements for AWS services, it can sometimes be easy to miss announcements about features that relate to security. Here are some recent security-related updates in AWS services that we’re excited about and that you might not have heard about. AWS Trusted Advisor inspects your AWS environment and finds […]

CloudBerry Active Directory Bridge for Authenticating non-AWS AD Users to S3

One of the benefits of AWS is the highly available, durable, and practically unlimited cloud-based storage you can get with HAQM Simple Storage Services (HAQM S3).  Over two trillion objects are already stored in S3 and customers are always finding more creative uses for S3.  One of the more commonly requested use cases is how […]