A “Curious Dev” was trying to play around with AWS S3 bucket policy.

*Statutory warning: Curiosity kills. Never try this stunt while at work. Organizations as big as U.S. Pentagon have faced the music because of this.

The ‘Principal’ element in the policy code specifies the user, account, service, or other entity that is allowed or denied access to a resource residing in AWS S3 bucket. There have been several cases reported across the world about how S3 buckets lead to data leakage. In most cases, that ‘star’ is the culprit.

For more information, visit AWS’ Principal page in the IAM User Guide. To know more about how to restrict Amazon S3 Bucket access to a specific IAM role, click here.

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Related Reading:

5 Not-to-Ignore Best Practices for AWS NACLs (Network Access Control Lists)

5 Not-to-Ignore Best Practices for AWS Security Groups

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