Tor Browser 5.5a5 发布，此版本是个新的 Alpha 版本，现已提供在 5.5a5 distribution directory 和 alpha download page。此版本主要的改进是 Firefox 的安全更新。 此外还更新了版本：Tor (0.2.7.6), OpenSSL (1.0.1q) 和 NoScript (2.7)；修复了显示方面，SharedWorkders 相关的问题，改进了字体指纹防御。在可用性方面，提升了 about:tor 的体验。 完整改进列表： All Platforms Bug 16940: After update, load local change notes Bug 16990: Avoid matching '250 ' to the end of node name Bug 17565: Tor fundraising campaign donation banner Bug 17770: Fix alignments on donation banner Bug 17792: Include donation banner in some non en-US Tor Browsers Bug 17108: Polish about:tor appearance Bug 17568: Clean up tor-control-port.js Translation updates Update Firefox to 38.5.0esr Update Tor to 0.2.7.6 Update OpenSSL to 1.0.1q Update NoScript to 2.7 Update Torbutton to 1.9.4.2 Bug 9659: Avoid loop due to optimistic data SOCKS code (fix of #3875) Bug 15564: Isolate SharedWorkers by first-party domain Bug 16940: After update, load local change notes Bug 17759: Apply whitelist to local fonts in @font-face (fix of #13313) Bug 17747: Add ndnop3 as new default obfs4 bridge Bug 17009: Shift and Alt keys leak physical keyboard layout (fix of #15646) Bug 17369: Disable RC4 fallback Bug 17442: Remove custom updater certificate pinning Bug 16863: Avoid confusing error when loop.enabled is false Bug 17502: Add a preference for hiding "Open with" on download dialog Bug 17446: Prevent canvas extraction by third parties (fixup of #6253) Bug 16441: Suppress "Reset Tor Browser" prompt Windows Bug 13819: Ship expert bundles with console enabled Bug 17250: Fix broken Japanese fonts OS X Bug 17661: Whitelist font .Helvetica Neue DeskInterface Tor Browser Bundle 是一个基于 Firefox ESR (Firefox with extended support) 的 Web 浏览器，默认配置通过 Tor 和 Vidalia 实现了个人隐私保护和匿名。该版本包括三个扩展：Torbutton, NoScript and HTTPS-Everywhere. Tor Browser 5.5a5 发布，Web 浏览器下载地址
