Tails OS
Tails, or The Amnesic Incognito Live System, is a security-focused Debian-based Linux distribution aimed at preserving privacy and anonymity.
is a portable operating system
that protects against
surveillance and censorship.
Open-source software (OSS)
https://tails.boum.org
https://gitlab.tails.boum.org/tails/tails.git
Download and install Tails
https://tails.boum.org/install/index.en.html
For USB sticks ( 1.2 GB )
https://tails.boum.org/install/download/index.en.html