The safest way to download any file is through a usenet provider such as giganews.com that offers encryption.  Usenet providors give you access to thousands of newsgroups.  Each newsgroup is comprised of files uploaded by users all around the world.  The cool thing about a usenet providor is that no one knows what you are downloading except the usenet providor.  Unlike bittorrent, where you are seeding, or sharing – downloading from newsgroups is just downloading.  You are not sharing the file as you download.