Introduction

Tails (The Amnesic Incognito Live System) is a security-focused, privacy-preserving operating system designed to be used from removable media—such as a USB stick or DVD—without leaving any trace on the host computer. Combining a live environment with strong encryption and network anonymization via the Tor network, Tails enables users to work and communicate in a way that resists surveillance, censorship, and data retention. Developed by a global team of privacy advocates and open-source contributors, Tails is trusted by journalists, activists, whistleblowers, and everyday users who value confidentiality and anonymity.

What Is Tails?

Tails is a Debian-based live system that aims to preserve privacy and anonymity by routing all internet traffic through the Tor network and ensuring that no data is stored on the computer’s hard drive unless explicitly configured. It was first released in 2009 under the name Amnesia and renamed to Tails in 2010 to emphasize its amnesic nature.

Origins and Development

• Initial Release: 2009, as Amnesia, by security researcher Julien Voisin.
• Renaming: Adopted the name Tails in 2010 to reflect its mission.
• Community-Driven: Maintained by the Tails Project, supported by donations and grants.
• Open Source: Source code is publicly available under the GPL license, fostering transparency and audits.

Core Features

• Live Environment: Bootable from USB or DVD without installation.
• Amnesic Design: Does not write to local hard disks all sessions are forgotten on shutdown unless persistent storage is enabled.
• Tor Routing: All network traffic is forced through the Tor network for anonymity.
• Cryptographic Tools: Pre-installed applications such as GnuPG, KeePassXC, and OpenSSL.
• Secure Workstation: Sandboxed applications, MAC address spoofing, and memory wiping after shutdown.

How Tails Works

The design philosophy of Tails centers on four pillars: amnesia, incognito, live, and secure. By integrating these concepts, Tails provides users with an environment that minimizes digital footprints and maximizes protection against surveillance.

Live Operating System

Tails runs entirely in RAM when booted. This live functionality means that:

• No permanent installation is required.
• Upon shutdown, all data in RAM is wiped automatically.
• Multiple computers can be used safely without leaving traces.

Amnesic Properties

By default, Tails does not mount or modify internal hard drives or SSDs. Key aspects include:

• Read-Only Media: The system image is read-only on the USB or DVD.
• Memory Wiping: Tails overwrites RAM on shutdown to prevent forensic recovery.
• No Logs: System logs and temporary files are stored only in volatile memory.

Network Security and Tor

All network connections are routed through Tor, preventing direct connections to the internet and hiding IP addresses from destination services.

Tor Integration

• Transparent Torification: Network-level rules force applications to use Tor.
• Onion Services: Access .onion sites securely and anonymously.
• Tor Button: The Tor Browser is preconfigured for maximum safety.

Bridges and Pluggable Transports

• Circumvention: Use obfuscated bridges to bypass internet censorship.
• Pluggable Transports: Options like obfs4, meek, and snowflake to evade traffic analysis.

Cryptographic Tools

Tails bundles a suite of encryption and authentication tools, including:

• GnuPG: Email and file encryption, digital signatures.
• KeePassXC: Password manager with strong encryption.
• Enigmail: PGP integration for the Thunderbird email client.
• OpenVPN: VPN client for additional anonymity layers.
• VeraCrypt: Container-based data encryption.

Orientation and Use Cases

Tails is designed for users who require strong operational security (OpSec) and anonymity in hostile environments. Key user groups include:

Journalism and Whistleblowing

• Secure Communication: Reporters can contact sources via encrypted email and instant messaging.
• Evidence Protection: Sensitive documents can be stored in encrypted volumes.
• Source Anonymity: Use Tor to shield both IP addresses and physical locations.

Activists and Human Rights Defenders

• Censorship Resistance: Bypass government firewalls using Tor bridges.
• Safety: Prevent tracking and surveillance during protests and online organizing.
• Secure Document Editing: Work on sensitive files without leaving traces.

General Privacy-Conscious Users

• Anonymous Web Browsing: Hide browsing habits from ISPs and advertisers.
• Public Wi-Fi Protection: Secure connections in coffee shops or airports.
• Temporary Sessions: Use shared or untrusted computers without fear of lingering data.

Installation and Getting Started

Setting up Tails involves downloading the ISO image, verifying its integrity, writing it to a USB stick or DVD, and booting the system. Detailed steps follow:

Download and Verification

1. Visit the official website.
2. Download the ISO image or use the Tails Installer.
3. Verify the download with OpenPGP and SHA256 checksums.
4. Confirm the image’s digital signature to ensure authenticity.

Creating a Live USB

• Use the Tails Installer on Windows, macOS, or Linux.
• Alternatively, write the ISO with tools like Etcher or dd.
• Enable the persistent volume during creation if you plan to save settings and files.

Using Tails

After booting Tails:

• Set the Administrator Password: Required for some advanced tasks.
• Configure Networking: Use the NetworkManager to connect via Wi-Fi or Ethernet.
• Launch Applications: Access Tor Browser, Thunderbird, LibreOffice, and other preinstalled tools.
• Enable Persistent Storage: Store bookmarks, encrypted documents, and system tweaks.

Persistent Storage

While Tails is designed to forget, persistent storage allows users to save certain data across reboots:

Security Measures and Best Practices

Even with a hardened system like Tails, user behavior greatly influences overall security. Recommended practices include:

Automatic Updates

• Keep Tails up to date to apply critical security patches.
• Use the built-in Upgrader or reinstall from a new ISO when major versions are released.

Operational Security (OpSec)

• Avoid logging into personal accounts that can be linked to your real identity.
• Do not install additional software unnecessarily.
• Be cautious when transferring files from untrusted sources.
• Consider using a trusted USB on computers in secure locations only.

Curiosities and Trivia

• Name Origin: “Tails” evokes the image of a snake shedding its skin, representing a fresh, untraceable environment each session.
• Logo: A mouse with a curled tail, symbolizing agility and stealth.
• Annual Report: Over 20,000 active users per month as of 2023.
• Translations: Available in more than 35 languages, thanks to volunteer translators.
• Funding: Supported by organizations such as the Open Technology Fund and the GU-BOARD grant.
• Real-World Impact: Instrumental in investigations like the Panama Papers, enabling safe collaboration and data analysis.

Comparison with Other Privacy-Focused Systems

Resources and Further Reading

• Official Tails Website
• Comprehensive Documentation
• Release Notes and Security Advisories
• How to Contribute
• The Tor Project