The Amnesic Incognito Live SystemThe Amnesic Incognito Live System or Tails is a security-focused Debian-based Linux distribution aimed at preserving privacy and anonymity. It is the next iteration of development on the previous Gentoo-based Incognito Linux distribution. All its outgoing connections are forced to go through Tor, and direct connections are blocked. The system is designed to be booted as a live DVD or live USB, and will leave no trace on the machine unless explicitly told to do so. The Tor Project has provided most of the financial support for development.
I find this works excellent on most Mac computers and I like using it best from a DVD
This is the system Edward Snowden used or still uses.
I rate it five stars.