Tor's Bug Smash Fund: Progress So Far

by al | January 21, 2020

At the beginning of August 2019, we asked you to help us build our very first Bug Smash Fund. This fund will ensure that the Tor Project has a healthy reserve earmarked for maintenance work and smashing the bugs necessary to keep Tor Browser, the Tor network, and the many tools that rely on Tor strong, safe, and running smoothly. Together we raised $86,081.

We want to share an update on some of the work the Bug Smash Fund has made possible.

So far, we’ve marked 77 tickets with BugSmashFund. As of today, 56 of those tickets have been closed, and 21 of them are still in progress. With this reserve, we’ve been able to fix bugs and complete necessary maintenance on core tor, bridgedb, Snowflake, and Metrics, as well as complete the Tor Browser ESR 68 migration. Roughly half of the Bug Smash Fund remains available for allocation, and we will continue to tag relevant maintenance work and bug fixing tickets that will be covered with this reserve. Thanks for supporting this work!

Below is a full list of the tickets we’ve closed so far.

Tor Browser – ESR Migration

Tor Browser is built on the Firefox Extended Series Release. When a new ESR is available, we migrate Tor Browser (both desktop and Android), which requires significant attention from the Tor Browser team. The Bug Smash Fund covered the following tickets associated with the ESR 68 migration completed in late 2019.


Bridges are Tor relays that help people circumvent censorship against the Tor network. For several reasons, people may want to ask for a bridge via email, and for these circumstances, we have the distribution method. When somebody emails from a riseup or Gmail account, the account replies with a bridge. The Bug Smash Fund helped fix bugs related to this mechanism.

Snowflake is a new system to defeat censorship. The Bug Smash Fund also helped us to work on a spec that will contribute to the process of collecting metrics on Snowflake.

Core Tor

The Bug Smash Fund has helped the Network team to fix many bugs—from circuit padding to onion services to documentation—as well as backport many previous bug fixes.


This fund made it possible for the Metrics team to improve tooling, as well as fix a bug in the Tor network data collecting service, CollecTor.

Thank you to everybody who made a contribution to the Bug Smash Fund. This work is critical in helping us to provide safer tools for millions of people around the world exercising their human rights to privacy and freedom online.

If you’d like to make a contribution to the Bug Smash Fund, you can do so by making a gift at just add “Bug Smash Fund” into the comment field, and we’ll make sure it’s directed to the right place.


Please note that the comment area below has been archived.

January 23, 2020


Thank you very much.

Espeically thank you for the Anti-Censorship efforts
hope snowflake works well,Since the Novel Coronavirus situation I won't be surprised that CCP would probably block and choke internet access.Nothing is sure,but the only sure thing is that situation inside the GFW will only get worse

Nonetheless,best wishes for tor people and anyone who atleast tries to do the real works

January 24, 2020


Considering its topic of privacy and network security, I thought you all would be interested in this video about VPNs by Louis Rossmann, a right-to-repair advocate. More and more Youtube "influencers" are shilling stuff all. the. time.

"The cost of shilling VPN companies is your reputation."