Software Update: Tor Browser 5.5.1

Version 5.5.1 of Tor Browser has been released. Tor stands for The Onion Router and is a network that can be used to surf the Internet fairly anonymously. All users’ tcp traffic is routed through various Tor routers, after which it is virtually impossible for the receiver to trace who the original sender was. This information is still present within the Tor network, so that answers, of course also via the system of routers, eventually arrive at the right place. Based on Firefox Extended Support Release version 38.6, this release contains the following changes and improvements:

Tor Browser 5.5.1 has been released

Most notably, this release features fixes for regressions caused by our font fingerprinting defense: chinese users should have a functional Tor Browser again and emoji support is restored on OS X and Linux systems (we are still working on a fix for Windows). Moreover, we fixed an oversight in one of our patches which broke some websites depending heavily on iframes.

All Platforms

• Bug 18168: Don’t clear an iframe’s window.name (fix of #16620)
• Bug 18137: Add two new obfs4 default bridges

Windows

• Bug 18169: Whitelist zh-CN UI font

OS X

• Bug 18172: Add Emoji support

Linux

• Bug 18172: Add Emoji support