Changes and updatesUpdate Tor Browser to 15.0.14.Remove Thunderbird.You can still install Thunderbird as additionalsoftware.If you have both the Thunderbird Email Client and Additional Softwarefeatures of the Persistent Storage turned on, Tails automatically addsThunderbird to your list of additionalsoftware.A new version of Thunderbird is released in Debian shortly after each Tailsreleases, because both Tails and Thunderbird follow the release calendarof Firefox. As a consequence, untilTails 7.5 (February 2026), the version of Thunderbird in Tails was almostalways outdated, with known security vulnerabilities.By installing Thunderbird as additional software, the latest version ofThunderbird is installed automatically from your Persistent Storage eachtime you start Tails.Fixed problemsFix 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 securityvulnerabilities in an application included in Tails, they might then use oneof these vulnerabilities to take full control of your Tails and deanonymizeyou.For more details, read ourchangelog.Get Tails 7.8To upgrade your Tails USB stick and keep your Persistent StorageAutomatic 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.To install Tails 7.8 on a new USB stickFollow our installation instructions:Install from WindowsInstall from macOSInstall from LinuxInstall from Debian or Ubuntu using the command line and GnuPGThe Persistent Storage on the USB stick will be lost if you install instead ofupgrading.To download onlyIf you don't need installation or upgrade instructions, you can download Tails7.8 directly:For USB sticks (USB image)For DVDs and virtual machines (ISO image)Support and feedbackFor support and feedback, visit the Supportsection on the Tails website. tails releases