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[[!meta title="About"]]
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> **amnesiac**, *noun*:<br/>
> forgetfulness; loss of long-term memory.

> **incognito**, *adjective & adverb*:<br/>
> (of a person) having one's true identity concealed.

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Tails is a live CD or live USB that aims at preserving your privacy and anonymity.
It helps you to:

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- use the Internet anonymously almost anywhere you go and on any computer:
  all connections to the Internet are forced to go through the Tor network;
- leave no trace on the computer you're using unless you ask it explicitly.
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Tails is [[Free Software|license]] and based on [[Debian
GNU/Linux|http://www.debian.org/]]. It comes with several built-in applications pre-configured with security in
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mind: web browser, instant messaging client, email client, office suite, image
and sound editor, etc.
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Anonymity online through Tor
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============================
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Tails relies on the Tor anonymity network to protect your privacy online: all
outgoing connections to the Internet are forced to go through Tor.

Tor is free software and an open network that helps you defend against a form of
network surveillance that threatens personal freedom and privacy, confidential
business activities and relationships, and state security known as traffic
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analysis.
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Tor protects you by bouncing your communications around a distributed network of
relays run by volunteers all around the world: it prevents somebody watching
your Internet connection from learning what sites you visit, and it prevents the
sites you visit from learning your physical location.

To learn more about Tor, see the official [Tor
website](https://www.torproject.org/):

- [Why we need
  Tor](https://www.torproject.org/about/overview.html.en#whyweneedtor)
- [How does Tor
  work](https://www.torproject.org/about/overview.html.en#thesolution)
- [Who uses Tor?](https://www.torproject.org/about/torusers.html.en)

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[[Read more on Tails anonymity|anonymity]]

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Use anywhere but leave no trace
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===============================
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Using Tails on a computer doesn't alter or depend on the operating system
installed on it. So you can use it in the same way on yours, the computer of a
friend or one at your local library. After removing your Tails CD or USB stick
the computer can start again on its usual operating system.

Tails is configured with a special care to not use the computer's hard-disks,
even if there is some swap space on it. The only storage space used by Tails is
the RAM memory, which is automatically erased when the computer shuts down. So
you won't leave any trace neither of the Tails system nor of what you did on
the computer. That's why we call it "amnesic".

This allows you to work on sensitive documents on any computer and protect you
from data recovery after shutdown. Of course, you can still explicitly save
some documents to another USB or external hard-disk and take them aways for
future use.

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[[Read more on Tails amnesia|amnesia]]

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What's next?
============

To continue discovering Tails, you can now read:

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  - the [[warning page|doc/warning]] page to understand better the security limitations of Tails and Tor,
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  - more details about the [[features and software|features]] included in Tails,
  - our [[design document|contribute/design]] about Tails specification, threat model and implementation.
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Acknowledgements
================
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  - Tails could not exist without [[Debian|http://www.debian.org/]], [[Debian Live|http://live.debian.net]], and [[Tor|https://www.torproject.org/]]; see our [[contribute/relationship with upstream]] document for details.
  - Tails was inspired by the [[Incognito LiveCD|http://web.archive.org/web/20090220133020/http://anonymityanywhere.com/]]. The Incognito author has declared it to be dead on March 23rd, 2010, and written that Tails "should be considered as its spiritual successor".
  - The [[Privatix Live-System|http://mandalka.name/privatix/]] an early source of inspiration, too.
  - Portions of Tails are based on TrueCrypt, freely available at [[http://www.truecrypt.org/]].