

Bug tor-browser#41741: Refactor the domain isolator and new circuit.This data is often dereferenced by other applications. Bug tor-browser#33955: Selecting "Copy image" from menu leaks the source URL to the clipboard.Bug tor-browser#26277: When "Safest" setting is enabled searching using duckduckgo should always use the Non-Javascript site for searches.Bug tor-browser#41796: Rebase Tor Browser to Firefox 115.Bug tor-browser#41759: Rebase Base Browser to 115 nightly.Bug tor-browser#41399: Update Mozilla's patch for Bug 1675054 to enable brotli encoding for HTTP onions as well.Bug tor-browser#41092: Enable tracking query parameters stripping.Bug tor-browser-build#40887: Update Webtunnel version to 38eb5505.Bug tor-browser-build#40885: Bump version of snowflake to v2.6.0.Bug tor-browser#40577: Add "suggest url" in DDG onion's manifest.The full changelog since Tor Browser 12.5a7 is: If you would like to contribute, our issue tracker can be found here. We would like to thank volunteer contributor cypherpunks1 for their fixes for tor-browser#26277, tor-browser#33955, tor-browser#41399, and tor-browser#41791. At-risk users should remain on the 102-esr based 12.5 stable series which will continue to receive security updates until 13.0 alpha is promoted to stable. This will be completed before we transition the 13.0 alpha series to stable. We have started our annual esr transition audit, where we review Mozilla's year's worth of work with an eye for privacy and security issues that would negatively affect Tor Browser users.

If you find any issues, please report them on our gitlab or on the Tor Project forum. This builds on a year's worth of upstream Firefox changes, so alpha-testers should expect to run into issues. This is our first alpha release in the 13.0 series and represents a transition from Firefox 102-esr to Firefox 115-esr. This is a Desktop platform only release (Windows, macOS, and Linux), but Android should be available in the coming weeks. This release updates Firefox to 115.0.2esr, including bug fixes, stability improvements and important security updates. Tor Browser 13.0a1 is now available from the Tor Browser download page and also from our distribution directory.
