The Tor team has released an update for Tor Browser, a modified version of the Firefox web browser with Tor functionality built-in.
The developers release new versions of Tor browser regularly, usually shortly after Mozilla pushes out an update for the organization's Firefox Extended Support Release (ESR) as it is based on that version.
Firefox ESR is designed for long-term support scenarios. It gets the same security updates as regular Firefox editions (if applicable), but major updates are only released every eight release cycles.
The downside to this slower pacing is that Firefox ESR won't support new features until the next major update. This means right now for instance that Firefox ESR, and Tor Browser, support legacy Firefox add-ons whereas the regular version of Firefox does not.
The latest version of Tor Browser is available for all supported operating systems. Windows users who run systems with 64-bit processes can download a 64-bit version of Tor Browser, but users who run the 32-bit version on 64-bit editions won't be upgraded.
So, users and administrators who want to switch to the 64-bit version need to install it to do so. The development team notes that "the sandbox" is not enabled yet on the 64-bit version though, but that is planned for the next release of Tor browser.
As far as the update is concerned, the team updated the underlying version of Firefox to Firefox ESR 52.5.0, and the underlying version of Tor to 0.3.2.4-alpha. The Firefox update fixed several security vulnerabilities.
The included extensions HTTPS Everywhere and NoScript have been updated as well.
Windows users furthermore can use the new configuration interface of the Tor Launcher user interface. This can be accessed with a click on the "configure" button when Tor Browser starts.
Options there are to set the "Tor is censored in my country" and "I use a proxy to connect to the Internet" options. If you set the first, options to select a bridge are provided.
Interested users can check out the full changelog of Tor Browser 7.5a8 on the official Tor Project website.
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