File Encryption - AthTek File Master - Version 2.0 AthTek File Master is both file management and file encryption software rather than a simple file manager. After installation, press F1 to read the Help File to learn how to use it. AthTek File Master resaves your important files in a protected database and keeps them away from virus and loss. After backup to AthTek File Master, you can use these files as in windows explorer. We strongly recommend you to set a password for file security.