"Shufflecake" can create a secret data storage area inside a PC, hide even the existence of the storage volume, and also create an emergency "decoy volume"

Shufflecake, a Linux tool for hidden encrypted volumes, was introduced.

It can create multiple concealed volumes on the same storage device.

The software also supports decoy volumes to reveal only shallow data under pressure.

The tool is experimental, but useful for plausible deniability and sensitive data protection.