Encrypting your Disks with Linux Up Encrypting your Disks with Linux There are many reasons to encrypt your disks.
Encryption can be much more secure than physical security.
By using an encrypted disk you can defeat the attacks done by power-cycling your machine, booting from another volume and mounting your partitions. Encryption can keep the person which stole your Laptop form poking around in your files. The Kernel loopback encryption is the classic method of encrypting partitions with Linux. The loopback patch is based on the BSD loopback encryption and was ported by some prominent cypherpunks if I remember correctly. There used to be some steganographic patches to it which allowed you to mount an audio file as a filesystem and your Data in the lower bits of that audio file.