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Critical security fixes
The vulnerabilities described below were identified during an external security audit by Radically Open Security and disclosed responsibly to our team. We are not aware of these attacks being used against Tails users until now.
These vulnerabilities can only be exploited by a powerful attacker who has already exploited another vulnerability to take control of an application in Tails.
If you want to be extra careful and used Tails a lot since January 9 without upgrading, we recommend that you do a manual upgrade instead of an automatic upgrade.
Prevent an attacker from installing malicious software permanently. (#20701)
In Tails 6.10 or earlier, an attacker who has already taken control of an application in Tails could then exploit a vulnerability in Tails Upgrader to install a malicious upgrade and permanently take control of your Tails.
Doing a manual upgrade would erase such malicious software.
Prevent an attacker from monitoring online activity. (#20709 and #20702)
In Tails 6.10 or earlier, an attacker who has already taken control of an application in Tails could then exploit vulnerabilities in other applications that might lead to deanonymization or the monitoring of browsing activity:
- In Onion Circuits, to get information about Tor circuits and close them.
- In Unsafe Browser, to connect to the Internet without going through Tor.
- In Tor Browser, to monitor your browsing activity.
- In Tor Connection, to reconfigure or block your connection to the Tor network.
Prevent an attacker from changing the Persistent Storage settings. (#20710)
Nuevas funcionalidades
Detection of partitioning errors
Sometimes, the partitions on a Tails USB stick get corrupted. This creates errors with the Persistent Storage or during upgrades. Partitions can get corrupted because of broken or counterfeit hardware, software errors, or physically removing the USB stick while Tails is running.
Tails now warns about such partitioning errors earlier. For example, if partitioning errors are detected when there is no Persistent Storage, Tails recommends that you reinstall or use a new USB stick.
Cambios y actualizaciones
Update Tor Browser to 14.0.4.
Update Thunderbird to 128.5.0esr.
Remove support for hardware wallets in Electrum. Trezor wallets stopped working in Debian 12 (Bookworm), and so in Tails 6.0 or later.
Disable GNOME Text Editor from reopening on the last file. (#20704)
Add a link to the Tor Connection assistant from the menu of the Tor status icon on the desktop.
Make it easier for our team to find useful information in WhisperBack reports.
Para más detalles, lee nuestro registro de cambios.
Obtener Tails 6.11
Para actualizar Tails y mantener tu Almacenamiento Persistente
Automatic upgrades are available from Tails 6.0 or later to 6.11.
Si no puedes hacer una actualización automática, o si Tails falla al iniciar después de una actualización automática, intenta hacer una actualización manual.
To install Tails 6.11 on a new USB stick
Sigue nuestras instrucciones de instalación:
El Almacenamiento Persistente en la memoria USB se perderá si instalas en vez de actualizar.
Para sólo descargar
If you don't need installation or upgrade instructions, you can download Tails 6.11 directly:
Cambios y actualizaciones
Fixed problems
Fix support for Trezor hardware wallets in Electrum. (#20138)
Fix an issue that prevented the Tails desktop to open with fewer memory. (#20631)
Disable saving telemetry data in Thunderbird. (#20661)
Para más detalles, lee nuestro registro de cambios.
Get Tails 6.10
Para actualizar Tails y mantener tu Almacenamiento Persistente
Automatic upgrades are available from Tails 6.0 or later to 6.10.
Si no puedes hacer una actualización automática, o si Tails falla al iniciar después de una actualización automática, intenta hacer una actualización manual.
To install Tails 6.10 on a new USB stick
Sigue nuestras instrucciones de instalación:
El Almacenamiento Persistente en la memoria USB se perderá si instalas en vez de actualizar.
Para sólo descargar
If you don't need installation or upgrade instructions, you can download Tails 6.10 directly:
📢 It’s that time of year again when we emerge from our encrypted shells to ask for your support!
2024 has been a life-changing year for Tails. We’ve continued doing what we do best -- developing Tails as an accessible shield for privacy, anonymity, and anti-censorship. And you may have heard: we merged operations with the Tor Project.
✊ This transition couldn’t have come at a more critical time for online and offline freedoms. Civil society is contracting, liberatory struggles are being silenced, and investigative journalists are being surveilled through increasingly sophisticated tools. In this landscape, our merger with the Tor Project isn’t just about operational efficiencies. By joining forces, we are strategically strengthening the infrastructure necessary for responding to these evolving challenges.
How you can help
Make a donation: Donate through any of the channels listed on our website.
Double your impact: Many corporations match employees’ donations to charitable organisations. Ask your employer if they do, and if they don't -- ask why! Search for our fiscal host, Riseup Labs, and specify Tails in your donation.
Spread the word: Share this fundraiser with your network! We are on X.
While we’ve joined the Tor Project, all contributions during this campaign will be used for Tails-related activities.
Together, we can ensure that everyone -- regardless of their circumstances -- has access to the tech they need to stay safe, secure, and free.
Cambios y actualizaciones
Problemas arreglados
- Fix automatic upgrades aborting with the error message "
The upgrade could not be downloaded" even after a successful download. (#20593)
Para más detalles, lee nuestro registro de cambios.
Obtener Tails 6.9
Para actualizar Tails y mantener tu Almacenamiento Persistente
Automatic upgrades are available from Tails 6.0 or later to 6.9.
Si no puedes hacer una actualización automática, o si Tails falla al iniciar después de una actualización automática, intenta hacer una actualización manual.
To install Tails 6.9 on a new USB stick
Sigue nuestras instrucciones de instalación:
El Almacenamiento Persistente en la memoria USB se perderá si instalas en vez de actualizar.
Para sólo descargar
If you don't need installation or upgrade instructions, you can download Tails 6.9 directly:
This release is an emergency release to fix a critical security vulnerability in Tor Browser.
Cambios y actualizaciones
Update Tor Browser to 13.5.7, which fixes MFSA 2024-51, a major use-after-free vulnerability. Using this vulnerability, an attacker could take control of Tor Browser, but probably not deanonymize you in Tails.
Mozilla is aware of this attack being used in the wild.
Problemas arreglados
Para más detalles, lee nuestro registro de cambios.
Obtener Tails 6.8.1
Para actualizar Tails y mantener tu Almacenamiento Persistente
Las actualizaciones automáticas están disponibles desde Tails 6.0 o posterior a la versión 6.8.1.
Si no puedes hacer una actualización automática, o si Tails falla al iniciar después de una actualización automática, intenta hacer una actualización manual.
Para instalar Tails 6.8.1 en una nueva memoria USB
Sigue nuestras instrucciones de instalación:
El Almacenamiento Persistente en la memoria USB se perderá si instalas en vez de actualizar.
Para sólo descargar
Si no necesitas instrucciones de instalación o actualización, puedes descargar Tails 6.8.1 directamente:
Nuevas funcionalidades
File system repair when unlocking the Persistent Storage
When the file system of the Persistent Storage has errors, Tails now offers you to repair the file system when unlocking from the Welcome Screen.
Because not all file system errors can be safely recovered this way, we wrote comprehensive documentation on how to recover data from the Persistent Storage using complementary techniques.
Cambios y actualizaciones
Update Tor Browser to 13.5.6.
Improve the notification when a network interface is disabled because MAC address anonymization failed.
Problemas arreglados
Increase the maximum waiting time to 8 minutes when unlocking the Persistent Storage before returning an error. (#20475)
Hide shown password while unlocking Persistent Storage. (#20498)
Better handle failures in when sending WhisperBack error messages:
Para más detalles, lee nuestro registro de cambios.
Obtener Tails 6.8
Para actualizar Tails y mantener tu Almacenamiento Persistente
Automatic upgrades are available from Tails 6.0 or later to 6.8.
Si no puedes hacer una actualización automática, o si Tails falla al iniciar después de una actualización automática, intenta hacer una actualización manual.
To install Tails 6.8 on a new USB stick
Sigue nuestras instrucciones de instalación:
El Almacenamiento Persistente en la memoria USB se perderá si instalas en vez de actualizar.
Para sólo descargar
If you don't need installation or upgrade instructions, you can download Tails 6.8 directly:
Today the Tor Project, a global non-profit developing tools for online privacy and anonymity, and Tails, a portable operating system that uses Tor to protect users from digital surveillance, have joined forces and merged operations. Incorporating Tails into the Tor Project's structure allows for easier collaboration, better sustainability, reduced overhead, and expanded training and outreach programs to counter a larger number of digital threats. In short, coming together will strengthen both organizations' ability to protect people worldwide from surveillance and censorship.
Pooling resources to better serve a global community
Countering the threat of global mass surveillance and censorship to a free Internet, Tor and Tails provide essential tools to help people around the world stay safe online. By joining forces, these two privacy advocates will pool their resources to focus on what matters most: ensuring that activists, journalists, other at-risk and everyday users will have access to improved digital security tools.
In late 2023, Tails approached the Tor Project with the idea of merging operations. Tails had outgrown its existing structure. Rather than expanding Tails’s operational capacity on their own and putting more stress on Tails workers, merging with the Tor Project, with its larger and established operational framework, offered a solution. By joining forces, the Tails team can now focus on their core mission of maintaining and improving Tails OS, exploring more and complementary use cases while benefiting from the larger organizational structure of The Tor Project.
This solution is a natural outcome of the Tor Project and Tails' shared history of collaboration and solidarity. 15 years ago, Tails' first release was announced on a Tor mailing list, Tor and Tails developers have been collaborating closely since 2015, and more recently Tails has been a sub-grantee of Tor. For Tails, it felt obvious that if they were to approach a bigger organization with the possibility of merging, it would be the Tor Project.
"Running Tails as an independent project for 15 years has been a huge effort, but not for the reasons you might expect. The toughest part wasn't the tech–it was handling critical tasks like fundraising, finances, and HR. After trying to manage those in different ways, I’m really relieved that Tails is now under the Tor Project’s wing. In a way, it feels like coming home."
–intrigeri, Team Lead Tails OS, The Tor Project
Welcoming new users and partners into our communities
Whether it’s someone seeking access to the open web or facing surveillance, Tor and Tails offer complementary protections. While Tor Browser anonymizes online activity, Tails secures the entire operating system–from files to browsing sessions. For journalists working in repressive regions or covering sensitive topics, Tor and Tails are often used as a set to protect their communications and safeguard their sources. The merger will lead to more robust treatment of these overlapping threat models and offer a comprehensive solution for those who need both network and system-level security in high-risk environments.
It will also open up broader training and outreach opportunities. Until now, Tor’s educational efforts have primarily focused on its browser. With Tails integrated into these programs, we can address a wider range of privacy needs and security scenarios. Lastly, this merger will lead to increased visibility for Tails. Many users familiar with Tor may not yet know about Tails OS. By bringing Tails within the Tor Project umbrella, we can introduce this powerful tool to more individuals and groups needing to remain anonymous while working in hostile environments.
"Joining Tor means we’ll finally have the capacity to reach more people who need Tails. We've known for a long time that we needed to ramp up our outreach, but we just didn’t have the resources to do so"
–intrigeri
"By bringing these two organizations together, we’re not just making things easier for our teams, but ensuring the sustainable development and advancement of these vital tools. Working together allows for faster, more efficient collaboration, enabling the quick integration of new features from one tool to the other. This collaboration strengthens our mission and accelerates our ability to respond to evolving threats."
– Isabela Fernandes, Executive Director, The Tor Project
Your support will go a long way to support this merge. Please consider making a donation to the Tor Project
If you'd like to earmark your donation specifically for Tails activities, you can continue to do so through Tails' donation page until further notice.
To learn more about how we are integrating our donation infrastructures and how your funds will be used, please refer to our updated Donation FAQ.
Highlights
In August:
We continued making it easier for Tails users to recover from the most common failure modes:
we released the first iteration of our design to detect a partition table corruption and advise users about it.
we worked on implementing detection of the Persistent Storage corruption on a Tails USB stick, reporting it to users, and repairing it.
We resumed our work to design a better backup feature for the Persistent Storage. We integrated the valuable feedback received in July on our design proposal for the improved backup feature (mockups on Gitlab).
We published instructions for installing Dangerzone in Tails. Dangerzone will help Tails users convert suspicious documents to safe PDFs. This was a significant milestone: this is the first time that we have recommended installing a 3rd party package that is not available in Debian.
Releases
In Tails 6.6, we brought:
improved hardware support for graphics, WiFi etc.
an updated Tor Browser and fixed issues with connecting to the Tor network using default bridges
fixes that make the Persisten Storage more robust.
To know more, check out the Tails 6.6 release notes and the changelog.
Metrics
Tails was started more than 767,542 times this month. That's a daily average of over 24,759 boots.
Cambios y actualizaciones
Update Tor Browser to 13.5.3.
Update Thunderbird to 115.15.0.
Update OnionShare from 2.2 to 2.6, which includes a feature to create an anonymous chat room.
Problemas arreglados
Keep the firewall on even during shutdown. (#20536)
Stop reporting an error when starting an old Tails USB stick with a system partition of 2.5 GB. (#20519)
Para más detalles, lee nuestro registro de cambios.
Problemas conocidos
Shim SBAT verification error
If you get the following error message when starting your regular Linux operating system, then it means that your Linux operating system is outdated.
Verifying shim SBAT data failed: Security Policy Violation
Something has gone seriously wrong: SBAT self-check failed: Security Policy Violation
Edit your UEFI settings to disable Secure Boot.
With Secure Boot disabled, your regular Linux operating system should start again.
To learn how to edit the BIOS or UEFI settings, search for the user manual of the computer on the support website of the manufacturer.
Update your regular Linux operating system.
Try to enable Secure Boot again in your UEFI settings.
If your regular Linux operating system still doesn't start, then disable Secure Boot again. You can try to enable Secure Boot again in the future.
It might take several months for your Linux distribution to provide updates before you can enable Secure Boot again.
Obtener Tails 6.7
Para actualizar Tails y mantener tu Almacenamiento Persistente
Las actualizaciones automáticas están disponibles desde Tails 6.0 o posterior hasta la versión 6.7.
Si no puedes hacer una actualización automática, o si Tails falla al iniciar después de una actualización automática, intenta hacer una actualización manual.
To install Tails 6.7 on a new USB stick
Sigue nuestras instrucciones de instalación:
El Almacenamiento Persistente en la memoria USB se perderá si instalas en vez de actualizar.
Para sólo descargar
Si no necesitas instrucciones de instalación o actualización, puedes descargar Tails 6.7 directamente:
Highlights
On our first month back from vacation, we continued making it easier to recover from common failure modes without requiring technical expertise:
we drafted an implementation of our design to detect, report, and repair corruption of the Persistent Storage
we finished implementing our plans to improve the detection of and recovery from low-memory situations. Going from prototype to implementation, this work was a great example of the 90-90 rule in action: the first 90% of the work consumed the first 90% of our time, and the remaining 10% accounted for the other 90% of our time
Over the past year, we have been close downstream of the Tor Project's design and implementation of Arti. This month, we reached a significant milestone in our collaboration: we prepared a prototype of Tails in which multiple applications use Arti.
freiheitsfoo, one of our longest supporters, renewed their sponsorship of Tails! Welcome aboard for another year of resisting censorship and surveillance online!
Releases
In Tails 6.5, we brought:
an updated Tor Browser with cool letterboxing improvements, and the latest Debian (12.6)
repairs to first-boot partitioning that many users were facing issues with after Tails 6.4
fixes to connecting via mobile broadband, LTE, and PPPoE DS. This has been a persistent issue in the Tails 6 series so far.
To know more, check out the Tails 6.5 release notes and the changelog.
Metrics
Tails was started more than 779,262 times this month. That's a daily average of over 25,946 boots.