Tails OS 4.0 Beta 1 releases: fixes a critical vulnerability in Tor Browser

Tails OS

Tails OS is a live operating system that you can start on almost any computer from a DVD, USB stick, or SD card.

It aims at preserving your privacy and anonymity and helps you to:

  • use the Internet anonymously and circumvent censorship; all connections to the Internet are forced to go through the Tor network;
  • leave no trace on the computer you are using unless you ask it explicitly;
  • use state-of-the-art cryptographic tools to encrypt your files, emails and instant messaging.

Tails OS OS 4.0 Beta 1 has been released.


  • based on Debian 10 (Buster). As such, it upgrades essentially all included software.

detecting new problems with the following hardware:

  • Mac computers
  • Recent Nvidia and ATI/AMD graphics cards

Other changes in Tails 4.0~beta1 include:

  • Replace KeePassX with KeePassXC. (#15297)
  • Add support for Thunderbolt devices. (#5463)

    If you have a Thunderbolt device, please try using it.

    Choose Devices ▸ Thunderbolt from the Settings utility to authorize your Thunderbolt devices, if needed.

    See also the design document on Thunderbolt 3 in Fedora 28 to see how Thunderbolt is integrated in GNOME.

  • Remove Scribus. (#16290)

    You can install Scribus again using the Additional Software feature.

  • Remove LibreOffice Math. (#16911)

    You can install LibreOffice Math again using the Additional Software feature.

  • Allow opening persistent volumes from other Tails USB sticks. (#16789)
  • Display OpenPGP Applet on the left of the Tor status icon. (#14796)
  • Add the Files browser to the list of favorite applications. (#16799)
  • Change the background of the boot menu. (#16837)
  • Use the default bookmarks from Tor Browser instead of our own default bookmarks. (#15895)
  • Remove the Home launcher from the desktop. (#16799)
  • Remove the default accounts in Pidgin. (#16744)

Technical details of all the changes are listed in the Changelog.