Compress Files allow you to create encrypted disk images in which you can store your personal files. To create an encrypted disk image, do as follows:

  1. Choose Encrypted Disk Image from the popup menu.
  2. Drag a folder or just some files you want to encrypt and protect with a password.
  3. You will be asked by the Finder to enter a password.
  4. Compress Files will create a .dmg compressed and encrypted file.

To mount the disk just double click on it and it will appear as a new drive. You can drag files to this drive and they will be added to the encrypted image. When you are finished, just eject the drive by clicking the eject icon next to the drive in the Finder. Once the drive is not mounted, anyone attempting to mount the image will be required to enter the password you specified.