{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Principal": "*",
            "Action": "s3:*",
            "Resource": [
                "arn:aws:s3:::/*",
                "arn:aws:s3:::"
            ],
            "Effect": "Deny",
            "Condition": {
                "StringNotEquals": {
                    "aws:sourceVpce": ""
                }
            }
        }
    ]
}