Tor Browser Bundle 4.5

Tor Browser Bundle

Protect your privacy. Defend yourself against network surveillance and traffic analysis.

Tor is a network of virtual tunnels that allows people and groups to improve their privacy and security on the Internet. The Tor software protects you by bouncing your communications around a distributed network of relays run by volunteers all around the world: it prevents somebody from watching your Internet connection and learning what sites you visit, it prevents the sites you visit from learning your physical location, and it lets you access sites which are blocked.

The Tor Browser Bundle lets you use Tor on Windows, Mac OS X, or Linux without needing to install any software. It can run off a USB flash drive, comes with a pre-configured web browser to protect your anonymity, and is self-contained.

Tor Browser 4.5 provides significant usability, security, and privacy enhancements over the 4.0 series. Here is a partial list of changes in the 4.5 series since 4.0:

All Platforms

  • Update Tor to with additional patches:
  • Bug 15482: Reset timestamp_dirty each time a SOCKSAuth circuit is used
  • Update NoScript to
  • Update HTTPS-Everywhere to 5.0.3
  • Bug 15689: Resume building HTTPS-Everywhere from git tags
  • Update meek to 0.17
  • Include obfs4proxy 0.0.5
  • Use obfs4proxy for obfs2, obfs3, obfs4, and ScrambleSuit bridges

Pluggable Transport Dependency Updates:

  • Bug 15265: Switch repo to
  • Bug 15448: Use golang 1.4.2 for meek and obs4proxy

Update Tor Launcher to Changes since in 4.0.8:

  • Bug 11879: Stop bootstrap if Cancel or Open Settings is clicked
  • Bug 13271: Display Bridge Configuration wizard pane before Proxy pane
  • Bug 13576: Don't strip "bridge" from the middle of bridge lines
  • Bug 13983: Directory search path fix for Tor Messanger+TorBirdy
  • Bug 14122: Hide logo if TOR_HIDE_BROWSER_LOGO set
  • Bug 14336: Fix navigation button display issues on some wizard panes
  • Bug 15657: Display the host:port of any connection faiures in bootstrap
  • Bug 15704: Do not enable network if wizard is opened

Update Torbutton to Changes since in 4.0.8:

  • Bug 3455: Use SOCKS user+pass to isolate all requests from the same url domain
  • Bug 5698: Use "Tor Browser" branding in "About Tor Browser" dialog
  • Bug 7255: Warn users about maximizing windows
  • Bug 8400: Prompt for restart if disk records are enabled/disabled.
  • Bug 8641: Create browser UI to indicate current tab's Tor circuit IPs

Bug 9387: Security Slider 1.0

  • Include descriptions and tooltip hints for security levels
  • Notify users that the security slider exists
  • Make use of new SVG, jar, and MathML prefs
  • ....and much, much more. check this link for the full release history

Download: Tor Browser Bundle 4.5 | 34.2 MB (Open Source)
View: Tor Browser Bundle Website | Other Systems

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