Ensure OSS Bucket Public Access is Disabled

Access control lists (ACLs) are used to control access to Object Storage Service (OSS) buckets and objects stored in OSS buckets. After a request is sent to access data stored in OSS, OSS checks the ACL of the data and verifies whether the requester has required permissions. You can configure the ACL of a bucket when you create the bucket. You can also modify the ACL of an existing bucket based on your requirements. Only the owner of a bucket can configure or modify the ACL of the bucket.