Tails is Free Software, you can download it, use it and share it without restriction.

First time user?

  • If you don't know what a metadata or a man-in-the-middle attack is.
  • If you think no-one can eavesdrop on your communications because you are using Tor.
  • If you have no notion of how Tails works.

Then, check first the about and warning pages to make sure that Tails is the right tool for you and that you understand well its limitations.

Download the ISO image

You will download Tails in the form of an ISO image: a single file that you will later burn on a DVD or install onto a USB stick or SD card.

Direct download

Latest release

Tails 1.3 ISO image

Cryptographic signature

Tails 1.3 signature

If you're not sure what the cryptographic signature is, please read the part on verifying the ISO image.

SHA256 checksum

587e06c70420e486fa441f872db5240fe24c3a4f7acb4f003fddaeb36d8c6df7

BitTorrent download

Latest release

Tails 1.3 torrent

Cryptographic signature

The cryptographic signature of the ISO image is also included in the Torrent.

Additionally, you can verify the signature of the Torrent file itself before downloading the ISO image.

Seed back!

Seeding back the image once you have downloaded it is also a nice and easy way of helping spread Tails.

List of current known issues in Tails.

Verify the ISO image

It is important to check the integrity of the ISO image you downloaded to make sure that the download went well.

Those techniques rely on standard HTTPS and certificate authorities to make you trust the content of this website. But, as explained on our warning page, you could still be victim of a man-in-the-middle attack while using HTTPS. On this website as much as on any other of the Internet.

As a consequence, they don't provide you with a strong way of checking the ISO image authenticity and making sure you downloaded a genuine Tails. In a dedicated section, we will propose you some more advanced techniques to check the authenticity of the ISO image.

All Tails ISO image are cryptographically signed by our OpenPGP key. OpenPGP is a standard for data encryption that provides cryptographic privacy and authentication through the use of keys owned by its users. Checking this signature is the recommended way of checking the ISO image integrity.

If you already know how to use an OpenPGP key you can download it straight away:

Tails signing key

Otherwise, read our instructions to check the ISO image integrity:

Using Linux with Gnome: Ubuntu, Debian, Tails, Fedora, etc.

Install seahorse-nautilus

You need to have the seahorse-nautilus package installed.

  • seahorse-nautilus is already installed in Tails.
  • In Debian or Ubuntu, if you are unsure or want to install seahorse-nautilus, you can issue the following commands:
    sudo apt-get update
    sudo apt-get install seahorse-nautilus
    

    The seahorse-nautilus package is only available in:

    • Debian starting from version 7 (Wheezy), as a backport. See the installation instructions on the Debian Backports website.
    • Ubuntu starting from version 14.04 (Trusty).

    If you are unable to install it, try verifying the ISO using the command line.

Get the Tails signing key

If you are using Tails, you already have the signing key. Otherwise, first download Tails signing key:

Tails signing key

Your browser should propose you to open it with "Import Key". Choose this action. It will add Tails signing key to your keyring, the collection of OpenPGP keys you already imported:

What should the web browser do with this file? Open
with: Import Key (default)

You will get notified will the following message:

Key Imported. Imported a key for Tails
developers (signing key) <tails@boum.org>

The GNOME notifications appear truncated on Tails 1.1 and later.
See ticket #7249.

Verify the ISO image

Now, download the cryptographic signature corresponding to the ISO image you want to verify:

Tails 1.3 signature

Your browser should propose you to open it with "Verify Signature". Choose this action to start the cryptographic verification:

What should the web browser do with this file?
Open with: Verify Signature (default)

Browse your files to select the Tails ISO image you want to verify. Then, the verification will start. It can take several minutes:

Verifying

If the ISO image is correct you will get a notification telling you that the signature is good:

Goog Signature

If the ISO image is not correct you will get a notification telling you that the signature is bad:

Bad Signature: Bad or forged signature.

Using Linux with the command line

You need to have GnuPG installed. GnuPG is the common OpenPGP implementation for Linux: it is installed by default under Debian, Ubuntu, Tails and many other distributions.

Get the Tails signing key

First, download Tails signing key:

Tails signing key

Open a terminal and import Tails signing key with the following commands:

cd [the directory in which you downloaded the key]
gpg --keyid-format long --import tails-signing.key

The output should tell you that the key was imported:

gpg: key 1202821CBE2CD9C1: public key "Tails developers (signing key) <tails@boum.org>" imported
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)

If you had already imported Tails signing key in the past, the output should tell you that the key was not changed:

gpg: key 1202821CBE2CD9C1: "Tails developers (signing key) <tails@boum.org>" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1

If you are shown the following message at the end of the output:

gpg: no ultimately trusted keys found

Analyse the other messages as usual: this extra message doesn't relate to the Tails signing key that you downloaded and usually means that you didn't create an OpenPGP key for yourself yet, which of no importance to verify the ISO image.

Verify the ISO image

Now, download the cryptographic signature corresponding to the ISO image you want to verify and save it in the same folder as the ISO image:

Tails 1.3 signature

Then, start the cryptographic verification, it can take several minutes:

cd [the ISO image directory]
gpg --keyid-format long --verify tails-i386-1.3.iso.sig tails-i386-1.3.iso

If the ISO image is correct the output will tell you that the signature is good:

gpg: Signature made Sat 30 Apr 2011 10:53:23 AM CEST
gpg:                using RSA key 1202821CBE2CD9C1
gpg: Good signature from "Tails developers (signing key) <tails@boum.org>"

If you see the following warning:

gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 0D24 B36A A9A2 A651 7878  7645 1202 821C BE2C D9C1

Then the ISO image is still correct, and valid according to the Tails signing key that you downloaded. This warning is related to the trust that you put in the Tails signing key. See, Trusting Tails signing key. To remove this warning you would have to personally sign the Tails signing key with your own key.

If the ISO image is not correct the output will tell you that the signature is bad:

gpg: Signature made Sat 30 Apr 2011 10:53:23 AM CEST
gpg:                using RSA key 1202821CBE2CD9C1
gpg: BAD signature from "Tails developers (signing key) <tails@boum.org>"

Using other operating systems

GnuPG, a common free software implementation of OpenPGP has versions and graphical frontends for both Windows and Mac OS X. This also make it possible to check the cryptographic signature with those operating systems:

You will find on either of those websites detailed documentation on how to install and use them.

For Windows using Gpg4win

After installing Gpg4win, download Tails signing key:

Tails signing key

Consult the Gpg4win documentation to import it

Then, download the cryptographic signature corresponding to the ISO image you want to verify:

Tails 1.3 signature

Consult the Gpg4win documentation to check the signature

If you see the following warning:

Not enough information to check the signature validity.
Signed on ... by tails@boum.org (Key ID: 0xBE2CD9C1
The validity of the signature cannot be verified.

Then the ISO image is still correct, and valid according to the Tails signing key that you downloaded. This warning is related to the trust that you put in the Tails signing key. See, Trusting Tails signing key. To remove this warning you would have to personally sign the Tails signing key with your own key.

For Mac OS X using GPGTools

After installing GPGTools, you should be able to follow the instruction for Linux with the command line. To open the command line, navigate to your Applications folder, open Utilities, and double click on Terminal.

So how can I better check the ISO image authenticity?

The Tails signing key that you downloaded from this website could be a fake one if you were victim of a man-in-the-middle attack.

Finding a way of trusting better Tails signing key would allow you to authenticate better the ISO image you downloaded. The following page will give you hints on how to increase the trust you can put in the Tails signing key you downloaded:

Stay tuned

It's very important to keep your version of Tails up-to-date, otherwise your system will be vulnerable to numerous security holes.

To be notified of new versions and important project news, follow our news feed or subscribe to our news mailing list:

Installation