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

October 21, 2019 - October 27, 2019

Mozz Fest (London)

October 30, 2019

Swiss Web Security Day (Bern)

November 01, 2019

Driving IT (Copenhagen)

See All Upcoming Events

Recent Updates

New Release: Tor 0.4.2.1-alpha

There's a new alpha release available for download. If you build Tor from source, you can download the source code for 0.4.2.1-alpha from the download page 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 release in the 0.4.2.x series. It adds new defenses for denial-of-service attacks against onion services. It also includes numerous kinds of bugfixes and refactoring to help improve Tor's stability and ease of development.

Changes in version 0.4.2.1-alpha - 2019-09-17

Major features (onion service v3, denial of service):
- Add onion service introduction denial of service defenses. Intro points can now rate-limit client introduction requests, using parameters that can be sent by the service within the ESTABLISH_INTRO cell. If the cell extension for this is not used, the intro point will honor the consensus parameters. Closes ticket 30924.
Major bugfixes (circuit build, guard):
- When considering upgrading circuits from "waiting for guard" to "open", always ignore circuits that are marked for close. Previously we could end up in the situation where a subsystem is notified of a circuit opening, but the circuit is still marked for close, leading to undesirable behavior. Fixes bug 30871; bugfix on 0.3.0.1-alpha.