A new hardened Tor Browser release is available. It can be found in the 6.0a5-hardened distribution directory and on the download page for hardened builds. This release features important security updates to Firefox. It contains a bunch of noteworthy changes. We switched the browser to Firefox ESR 45 and rebased our old patches/wrote new ones where necessary. We also ship a new Tor alpha version, 0.2.8.2, which makes meek usable again and contains a number of other improvements/stability fixes. Note: There is no incremental update from 6.0a3-hardened available due to bug 17858. The internal updater should work, though, doing a complete update. Here is the complete changelog since 6.0a4-hardened: Tor Browser 6.0a5-hardened -- April 28 2016 All Platforms Update Firefox to 45.1.0esr Update Tor to 0.2.8.2-alpha Update Torbutton to 1.9.5.3 Bug 18466: Make Torbutton compatible with Firefox ESR 45 Translation updates Update Tor Launcher to 0.2.8.4 Bug 13252: Do not store data in the application bundle Bug 10534: Don't advertise the help desk directly anymore Translation updates Update HTTPS-Everywhere to 5.1.6 Update NoScript to 2.9.0.11 Update meek to 0.22 (tag 0.22-18371-2) Bug 18371: Symlinks are incompatible with Gatekeeper signing Bug 15197 and child tickets: Rebase Tor Browser patches to ESR 45 Bug 18900: Fix broken updater on Linux 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 for now Bug 17506: Reenable building hardened Tor Browser with startup cache 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 18726: Add new default obfs4 bridge (GreenBelt) Build System Bug 16224: Don't use BUILD_HOSTNAME anymore in Firefox builds Bug 18699: Stripping fails due to obsolete Browser/components directory Bug 18698: Include libgconf2-dev for our Linux builds Continue reading...