While AWS been very beneficial for public area content of websites, the password restricted areas of website content, many times which are paid members only areas, is vulnerable to file sharing to non paid members, since the actual file location on Amazon's servers is exposed and is readily accessible. Biz's S3 Downloader software conceals the actual Amazon Web Services files urls and makes it "appear" to the user that the file is being downloaded directly from the website, not AWS. In addition to the actual AWS url being concealed, if the user were to share the download url with anyone - it will not work for the unauthorized user.