Amazon S3 Block Public Access Another Layer of Protection for Your Accounts and Buckets

Amazon S3 is making it easier for you to protect your buckets and objects with the introduction of S3 Block Public Access. This is a new level of protection that works at the account level and also on individual buckets. You have the ability to block existing public access (whether it was specified by an ACL or a policy) and to ensure that public access is not granted to newly created items. The feature is designed to be easy to use, and can be accessed from the S3 Console, the.CLCL and CloudFormation templates.”]

Source: https://aws.amazon.com/blogs/aws/amazon-s3-block-public-access-another-layer-of-protection-for-your-accounts-and-buckets/