Tor Browser 4.5.1

Tor Browser Bundle 4.5.1 released

Mike Perry announced the release of Tor Browser 4.5.1, which is based on Firefox ESR 31.7.0 and features important security updates to Firefox. The 4.5.1 release also addresses several regressions and usability issues discovered during the 4.5 release. The most notable change is that we have slightly relaxed the first party isolation privacy property, due to issues encountered on several file hosting sites as well as other sites that host content on multiple subdomains.