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May 2016

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Tor Browser 6.0 is released
by Nicolas Vigier 30 May '16

30 May '16

The Tor Browser Team is proud to announce the first stable release in the 6.0 series. This release is available from the Tor Browser Project page [1] and also from our distribution directory [2]. 1: https://www.torproject.org/download/download-easy.html 2: https://www.torproject.org/dist/torbrowser/6.0/ This release brings us up to date with Firefox 45-ESR [3], which should mean a better support for HTML5 video on Youtube, as well as a host of other improvements. 3: https://www.mozilla.org/en-US/firefox/organizations/faq/ Beginning with the 6.0 series code-signing for OS X systems is introduced. This should help our users who had trouble with getting Tor Browser to work on their Mac due to Gatekeeper interference. There were bundle layout changes necessary to adhere to code signing requirements but the transition to the new Tor Browser layout on disk should go smoothly. The release also features new privacy enhancements and disables features where we either did not have the time [4] to write a proper fix or where we decided they are rather potentially harmful in a Tor Browser context. 4: https://bugs.torproject.org/16998 On the security side this release makes sure that SHA1 certificate support is disabled [5] and our updater is not only relying on the signature alone but is checking the hash [6] of the downloaded update file as well before applying it. Moreover, we provide a fix [7] for a Windows installer related DLL hijacking vulnerability. 5: https://bugs.torproject.org/18042 6: https://bugs.torproject.org/19121 7: https://bugs.torproject.org/17895 A note on our search engine situation: Lately, we got a couple of comments on our blog and via email wondering why we are now using DuckDuckGo as the default search engine and not Disconnect anymore. Well, we still use Disconnect. But for a while now Disconnect has no access to Google search results anymore which we used in Tor Browser. Disconnect being more a meta search engine which allows users to choose between different search providers fell back to delivering Bing search results which were basically unacceptable quality-wise. While Disconnect is still trying to fix the situation we asked them to change the fallback to DuckDuckGo as their search results are strictly better than the ones Bing delivers. The full changelog since Tor Browser 5.5.5 is: Tor Browser 6.0 -- May 30 * All Platforms * Update Firefox to 45.1.1esr * Update OpenSSL to 1.0.1t * Update Torbutton to 1.9.5.4 * Bug 18466: Make Torbutton compatible with Firefox ESR 45 * Bug 18743: Pref to hide 'Sign in to Sync' button in hamburger menu * Bug 18905: Hide unusable items from help menu * Bug 16017: Allow users to more easily set a non-tor SSH proxy * Bug 17599: Provide shortcuts for New Identity and New Circuit * Translation updates * Code clean-up * Update Tor Launcher to 0.2.9.3 * Bug 13252: Do not store data in the application bundle * Bug 18947: Tor Browser is not starting on OS X if put into /Applications * Bug 11773: Setup wizard UI flow improvements * Translation updates * Update HTTPS-Everywhere to 5.1.9 * Update meek to 0.22 (tag 0.22-18371-3) * Bug 18371: Symlinks are incompatible with Gatekeeper signing * Bug 18904: Mac OS: meek-http-helper profile not updated * Bug 15197 and child tickets: Rebase Tor Browser patches to ESR 45 * Bug 18900: Fix broken updater on Linux * Bug 19121: The update.xml hash should get checked during update * Bug 18042: Disable SHA1 certificate support * Bug 18821: Disable libmdns support for desktop and mobile * Bug 18848: Disable additional welcome URL shown on first start * Bug 14970: Exempt our extensions from signing requirement * Bug 16328: Disable MediaDevices.enumerateDevices * Bug 16673: Disable HTTP Alternative-Services * Bug 17167: Disable Mozilla's tracking protection * Bug 18603: Disable performance-based WebGL fingerprinting option * Bug 18738: Disable Selfsupport and Unified Telemetry * Bug 18799: Disable Network Tickler * Bug 18800: Remove DNS lookup in lockfile code * Bug 18801: Disable dom.push preferences * Bug 18802: Remove the JS-based Flash VM (Shumway) * Bug 18863: Disable MozTCPSocket explicitly * Bug 15640: Place Canvas MediaStream behind site permission * Bug 16326: Verify cache isolation for Request and Fetch APIs * Bug 18741: Fix OCSP and favicon isolation for ESR 45 * Bug 16998: Disable <link rel="preconnect"> for now * Bug 18898: Exempt the meek extension from the signing requirement as well * Bug 18899: Don't copy Torbutton, TorLauncher, etc. into meek profile * Bug 18890: Test importScripts() for cache and network isolation * Bug 18886: Hide pocket menu items when Pocket is disabled * Bug 18703: Fix circuit isolation issues on Page Info dialog * Bug 19115: Tor Browser should not fall back to Bing as its search engine * Bug 18915+19065: Use our search plugins in localized builds * Bug 19176: Zip our language packs deterministically * Bug 18811: Fix first-party isolation for blobs URLs in Workers * Bug 18950: Disable or audit Reader View * Bug 18886: Remove Pocket * Bug 18619: Tor Browser reports "InvalidStateError" in browser console * Bug 18945: Disable monitoring the connected state of Tor Browser users * Bug 18855: Don't show error after add-on directory clean-up * Bug 18885: Disable the option of logging TLS/SSL key material * Bug 18770: SVGs should not show up on Page Info dialog when disabled * Bug 18958: Spoof screen.orientation values * Bug 19047: Disable Heartbeat prompts * Bug 18914: Use English-only label in <isindex/> tags * Bug 18996: Investigate server logging in esr45-based Tor Browser * Bug 17790: Add unit tests for keyboard fingerprinting defenses * Bug 18995: Regression test to ensure CacheStorage is disabled * Bug 18912: Add automated tests for updater cert pinning * Bug 16728: Add test cases for favicon isolation * Bug 18976: Remove some FTE bridges * Windows * Bug 13419: Support ICU in Windows builds * Bug 16874: Fix broken https://sports.yahoo.com/dailyfantasy page * Bug 18767: Context menu is broken on Windows in ESR 45 based Tor Browser * OS X * Bug 6540: Support OS X Gatekeeper * Bug 13252: Tor Browser should not store data in the application bundle * Bug 18951: HTTPS-E is missing after update * Bug 18904: meek-http-helper profile not updated * Bug 18928: Upgrade is not smooth (requires another restart) * Build System * All Platforms * Bug 18127: Add LXC support for building with Debian guest VMs * Bug 16224: Don't use BUILD_HOSTNAME anymore in Firefox builds * Bug 18919: Remove unused keys and unused dependencies * Windows * Bug 17895: Use NSIS 2.51 for installer to avoid DLL hijacking * Bug 18290: Bump mingw-w64 commit we use * OS X * Bug 18331: Update toolchain for Firefox 45 ESR * Bug 18690: Switch to Debian Wheezy guest VMs * Linux * Bug 18699: Stripping fails due to obsolete Browser/components directory * Bug 18698: Include libgconf2-dev for our Linux builds * Bug 15578: Switch to Debian Wheezy guest VMs (10.04 LTS is EOL)

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