Tinfoil Hat Linux

From S23Wiki

Tinfoil Hat Linux is a secure, single floppy, bootable Linux distribution for storing PGP keys and then encrypting, signing and wiping files. At some point it became an exercise in over-engineering.

You may want to Tinfoil Hat Linux when ....

You're using a computer that could have a keystroke logger installed. keyghost.com is an example of a tiny & cheap hardware loggers. There are smaller & cheaper ones out there, and they're all hard to notice. Look for them the next time you're using a public terminal at a convention or hosting facility.
Using your personal GPG keys at work, school or a web cafe where you don't trust or own the equipment.
If you maintain a PGP Certificate Authority and have to have a safe place to use the CA key.
If you're with witness.org &/or have to hide the very fact that you have PGP.
If you simply don't want to risk putting a PGP key on a hard drive where someone else might have access to it.
The Illuminati are watching your computer, and you need to use morse code to blink out your PGP messages on the numlock key.