@bflipp You can also block public access at the account level, preventing any bucket from being made public: https://docs.aws.amazon.com/AmazonS3/latest/userguide/configuring-block-public-access-account.html
Configuring block public access settings for your account - Amazon Simple Storage Service

You can use the S3 console, AWS CLI, AWS SDKs, and REST API to configure block public access settings for all the buckets in your account. For more information, see the sections below.