community | Tor Blog

Strength in Numbers: Usable Tools Don’t Need To Be Invasive

To improve user experience, most of the tech industry relies on analyzing their users’ behavioral data to drive decision making. Tor does things differently.

We Launched a Live Brand Styleguide

Visual consistency never happens overnight. We have been implementing the guidelines across platforms, and there are still many big changes to come (a redesign of our website is underway).

Announcing the Tor Browser User Manual

The community team is excited to announce the new Tor Browser User Manual!

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Greetings from Tor's New Executive Director

Shari Steele

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Announcing Shari Steele as our new executive director

At long last, I am thrilled to announce that our executive director search is now successful!

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Tor Open Hack Day in Berlin (for everyone)

Hello!

We are very happy to tell you that the Tor meeting in Berlin is currently underway!

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Tor Exit Nodes in Libraries - Pilot (phase one)

Hello Tor Community!

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Help Tor Find a New Executive Director

The Tor Project is continuing its world-wide search for our new Executive Director.

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Tor Project Launches World-wide Search for New Executive Director

The Tor Project is pleased to open a world-wide search for our new Executive Director.

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How We Work

The Tor Project is driven by ideas. We believe in the right to privacy for every person on the planet.

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Upcoming Events

May 25, 2019

Tor Meetup (Athens)

June 11, 2019 - June 14, 2019

RightsCon (Tunis)

June 27, 2019 - June 29, 2019

Congresso Abraji (Brasil)

July 16, 2019 - July 20, 2019

PETS (Stockholm)

August 08, 2019 - August 11, 2019

DEF CON (Las Vegas)

See All Upcoming Events

Recent Updates

New alpha release: Tor 0.4.1.1-alpha

There's a new alpha release available for download. If you build Tor from source, you can download the source code for 0.4.1.1-alpha from the usual place on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release in the next couple of weeks.

Remember, this is an alpha release: you should only run this if you'd like to find and report more bugs than usual.

This is the first alpha in the 0.4.1.x series. It introduces lightweight circuit padding to make some onion-service circuits harder to distinguish, includes a new "authenticated SENDME" feature to make certain denial-of-service attacks more difficult, and improves performance in several areas.

Changes in version 0.4.1.1-alpha - 2019-05-22

Major features (circuit padding):
- Onion service clients now add padding cells at the start of their INTRODUCE and RENDEZVOUS circuits, to make those circuits' traffic look more like general purpose Exit traffic. The overhead for this is 2 extra cells in each direction for RENDEZVOUS circuits, and 1 extra upstream cell and 10 downstream cells for INTRODUCE circuits. This feature is only enabled when also supported by the circuit's middle node. (Clients may specify fixed middle nodes with the MiddleNodes option, and may force-disable this feature with the CircuitPadding torrc.) Closes ticket 28634.
Major features (code organization):
- Tor now includes a generic publish-subscribe message-passing subsystem that we can use to organize intermodule dependencies. We hope to use this to reduce dependencies between modules that don't need to be related, and to generally simplify our codebase. Closes ticket 28226.