Tor’s Bug Smash Fund: $86K Raised!
![](../../../../tors-bug-smash-fund-86k-raised/lead.png)
To the Tor community: we owe you a thank you! You made the Bug Smash Fund campaign more successful than we could have predicted.
To the Tor community: we owe you a thank you! You made the Bug Smash Fund campaign more successful than we could have predicted.
After months of work, we have a new stable release series! If you build Tor from source, you can download the source code for 0.4.1.5 on the website. Packages should be available within the next several weeks, with a new Tor Browser in early September.
This is the first stable release in the 0.4.1.x series. This series adds experimental circuit-level padding, authenticated SENDME cells to defend against certain attacks, and several performance improvements to save on CPU consumption. It fixes bugs in bootstrapping and v3 onion services. It also includes numerous smaller features and bugfixes on earlier versions.
Per our support policy, we will support the 0.4.1.x series for nine months, or until three months after the release of a stable 0.4.2.x: whichever is longer. If you need longer-term support, please stick with 0.3.5.x, which will we plan to support until Feb 2022.
Below are the changes since 0.4.0.5. For a list of only the changes since 0.4.1.4-rc, see the ChangeLog file.
The bugs are coming. We just don’t know when. This August, all donations to Tor will be earmarked towards bugs and maintenance. Your contribution can help keep us on our toes and ready to respond rapidly to critical security issues.
There's a new release candidate available for download. If you build Tor from source, you can download the source code for 0.4.1.4-rc from the usual place on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release likely in the next month or so.
Remember, this is just a release candidate: you should only run this if you'd like to find and report bugs.
Tor 0.4.1.4-rc fixes a few bugs from previous versions of Tor, and updates to a new list of fallback directories. If no new bugs are found, the next release in the 0.4.1.x series should be stable.
There's a new alpha release available for download. If you build Tor from source, you can download the source code for 0.4.1.3-alpha from the usual place on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release likely in the next couple of weeks.
Remember, this is an alpha release: you should only run this if you'd like to find and report more bugs than usual.
Tor 0.4.1.3-alpha resolves numerous bugs left over from the previous alpha, most of them from earlier release series.
There's a new alpha release available for download. If you build Tor from source, you can download the source code for 0.4.1.2-alpha from the usual place on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release by some time next week.
Remember, this is an alpha release: you should only run this if you'd like to find and report more bugs than usual.
Tor 0.4.1.2-alpha resolves numerous bugs--some of them from the previous alpha, and some much older. It also contains minor testing improvements, and an improvement to the security of our authenticated SENDME implementation.
There's a new alpha release available for download. If you build Tor from source, you can download the source code for 0.4.1.1-alpha from the usual place on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release in the next couple of weeks.
Remember, this is an alpha release: you should only run this if you'd like to find and report more bugs than usual.
This is the first alpha in the 0.4.1.x series. It introduces lightweight circuit padding to make some onion-service circuits harder to distinguish, includes a new "authenticated SENDME" feature to make certain denial-of-service attacks more difficult, and improves performance in several areas.
Tor Browser 8.5 includes our first stable release for Android plus many new features.
After months of work, we have a new stable release series! If you build Tor from source, you can download the source code for 0.4.0.5 on the website. Packages should be available within the next several weeks, with a new Tor Browser likely later this month.
This is the first stable release in the 0.4.0.x series. It contains improvements for power management and bootstrap reporting, as well as preliminary backend support for circuit padding to prevent some kinds of traffic analysis. It also continues our work in refactoring Tor for long-term maintainability.
Tor 0.4.0.4-rc is the first release candidate in its series; it fixes several bugs from earlier versions, including some that had affected stability, and one that prevented relays from working with NSS.