From the developer: "FileVault is a file protection program that allows you to lock out personal files on your hard drive with a password. For each protected file, you have the choice of read-only or full-open protection. New in this release, FileVault has a DOD file shredder, system lock, stealth mode, and stronger file security. You can protect your files through an open-dialog box, or by dragging and dropping files. An extensive help system is included. This program is not intended for use on NT-based operating systems like Windows XP."