Whonix

Whonix is a desktop operating system designed for advanced security and privacy.

Online anonymity is realized via fail-safe, automatic, and desktop-wide use of the Tor network.

A heavily reconfigured Debian base is run inside multiple virtual machines, providing a substantial layer of protection from malware and IP address leaks.

Commonly used applications are pre-installed and safely pre-configured for immediate use.

Whonix is the only operating system designed to be run inside a VM and paired with Tor.

https://www.whonix.org/