
Tor Browser 9 ships with a fingerprinting defense for those scenarios as well, which is called Letterboxing, a technique developed by Mozilla and presented earlier this year.

by maximizing them or going into fullscreen mode). That worked until users started to resize their windows (e.g. The strategy here is to put all users in a couple of buckets to make it harder to single them out. Tor Browser, in its default mode, is starting with a content window rounded to a multiple of 200px x 100px to prevent fingerprinting the screen dimensions. Rather than being a submenu behind the onion button, Tor Network Settings, including the ability to fetch bridges to bypass censorship where Tor is blocked, are easier to access on about :preferences #tor. We redesigned the bridge and proxy configuration dialogs and include them directly into the browser's preference settings as well. Now that both extensions are tightly integrated into Tor Browser, they'll no longer be found on the about :addons page. You can also request a New Identity, and a New Circuit, from within the menu on the toolbar. Instead of going into the onion button to request a New Identity, we've made this important feature easier to access by giving it its own button in the toolbar. That's why now, rather than using the onion button that was in the toolbar, you can see your path through the Tor network and request a New Circuit through the Tor network in on the URL bar. We want your experience using Tor to be fully integrated within the browser so how you use Tor is more intuitive.

In Tor Browser 9.0, we continue to build upon those efforts with sleeker integration and additional localization support. We want everyone in the world to be able to enjoy the privacy and freedom online Tor provides, and that's why over the past couple years, we've been working hard to boost our UX and localization efforts, with the biggest gains first visible in Tor Browser 8.0. In addition to all the needed patch rebasing and toolchain updates, we made big improvements to make Tor Browser work better for you. Tor Browser 9.0 is the first stable release based on Firefox 68 ESR and contains a number of updates to other components as well (including Tor to 0.4.1.6 and OpenSSL to 1.1.1d for desktop versions and Tor to 0.4.1.5 for Android). This release features important security updates to Firefox. Tor Browser 9.0 is now available from the Tor Browser download page and also from our distribution directory. Update : Added a section about letterboxing.


Update : Clarified the amount of locales we support.
