Tails is a free, portable operating system based on Debian GNU/Linux designed to protect users against surveillance, censorship, and advertising. It is specifically built to provide a secure environment for activists, journalists, and anyone requiring extra privacy in the digital world.

The main features of this tool include:

• Total Portability and Stealth: Users start Tails from a USB stick instead of the computer's internal operating system (like Windows or macOS). It is designed to leave no trace on the computer once it is shut down.

• Integrated Tor Network: To protect online privacy and bypass censorship, Tails routes all internet traffic through the Tor network. It is developed and maintained by the same team behind the Tor Project.

• Digital Security Toolbox: The system comes with a selection of ready-to-use applications specifically chosen for working on sensitive documents and communicating securely.

• Safe-by-Default Configuration: To reduce the risk of user error, all included software is pre-configured with secure defaults to maintain anonymity and security.

• Verifiable Free Software: As free software, Tails' source code is open for independent security researchers to verify its integrity and security claims.

• Whistleblower-Approved Security: The platform is recommended by the Electronic Frontier Foundation (EFF) and Edward Snowden, who highlights its ability to reduce operational mistakes that could compromise anonymity.