# [Tails 7.8](
https://tails.net/news/version_7.8/)
# Changes and updates
* Update _Tor Browser_ to [15.0.14](
https://blog.torproject.org/new-release-tor-browser-15014/).
* Remove _Thunderbird_.
You can still [install _Thunderbird_ as additional
software](
https://tails.net/doc/anonymous_internet/thunderbird/index.en.html).
If you have both the **Thunderbird Email Client** and **Additional Software**
features of the Persistent Storage turned on, Tails automatically adds
_Thunderbird_ to your list of [additional
software](
https://tails.net/doc/persistent_storage/additional_software/index.en.html).
A new version of _Thunderbird_ is released in Debian shortly after each Tails
release, because both _Tails_ and _Thunderbird_ follow the [release calendar
of _Firefox_](
https://whattrainisitnow.com/calendar/). As a consequence, until
Tails 7.5 (February 2026), the version of _Thunderbird_ in Tails was almost
always outdated, with known security vulnerabilities.
By installing _Thunderbird_ as additional software, the latest version of
_Thunderbird_ is installed automatically from your Persistent Storage each
time you start Tails.
# Fixed problems
* Fix multiple security vulnerabilities in the Linux kernel and haveged, that could allow an application in Tails to gain administration privileges.
For example, if an attacker was able to exploit other unknown security
vulnerabilities in an application included in Tails, they might then use one
of these vulnerabilities to take full control of your Tails and deanonymize
you.
For more details, read our
[changelog](
https://gitlab.tails.boum.org/tails/tails/-/blob/master/debian/changelog).
# Get Tails 7.8
## To upgrade your Tails USB stick and keep your Persistent Storage
* Automatic upgrades are available from Tails 7.0 or later to 7.8.
* If you cannot do an automatic upgrade or if Tails fails to start after an automatic upgrade, please try to do a [manual upgrade](
https://tails.net/doc/upgrade/index.en.html#manual).
## To install Tails 7.8 on a new USB stick
Follow our installation instructions:
* [Install from Windows](
https://tails.net/install/windows/index.en.html)
* [Install from macOS](
https://tails.net/install/mac/index.en.html)
* [Install from Linux](
https://tails.net/install/linux/index.en.html)
* [Install from Debian or Ubuntu using the command line and GnuPG](
https://tails.net/install/expert/index.en.html)
The Persistent Storage on the USB stick will be lost if you install instead of
upgrading.
## To download only
If you don't need installation or upgrade instructions, you can download Tails
7.8 directly:
* [For USB sticks (USB image)](
https://tails.net/install/download/index.en.html)
* [For DVDs and virtual machines (ISO image)](
https://tails.net/install/download-iso/index.en.html)
URL: <
https://tails.net/news/version_7.8/>
