Hey everyone! Here are our meeting logs: https://meetbot.debian.net/tor-meeting/2026/tor-meeting.2026-07-02-16.00.html And our meeting pad: Anti-censorship work meeting pad -------------------------------- Anti-censorship -------------------------------- Next meeting: Thursday, July 16 16:00 UTC Facilitator: cohosh ^^^(See Facilitator Queue at tail) Weekly meetings, every Thursday at 16:00 UTC, in #tor-meeting at OFTC (channel is logged while meetings are in progress) This week's Facilitator: shelikhoo == Goal of this meeting == Weekly check-in about the status of anti-censorship work at Tor.Coordinate collaboration between people/teams on anti-censorship at the Tor Project and Tor community.
== Links to Useful documents == * Our anti-censorship roadmap:* Roadmap:https://gitlab.torproject.org/groups/tpo/anti-censorship/-/boards
* The anti-censorship team's wiki page:* https://gitlab.torproject.org/tpo/anti-censorship/team/-/wikis/home
* Past meeting notes can be found at: * https://lists.torproject.org/pipermail/tor-project/ * Tickets that need reviews: from projects, we are working on: * All needs review tickets:* https://gitlab.torproject.org/groups/tpo/anti-censorship/-/merge_requests?scope=all&utf8=%E2%9C%93&state=opened&assignee_id=None
* Projects the TPI anti-censorship team is working on:* Project 146: Expanding access to digital media through the use of secure communications, infrastructure, tools, and techniques * https://gitlab.torproject.org/groups/tpo/anti-censorship/-/issues/?label_name%5B%5D=Project%20146 * Project 170: Monitoring and reporting on censorship against the Tor network
* epic: https://gitlab.torproject.org/groups/tpo/-/epics/17 * Project 201: Signaling channels* board https://gitlab.torproject.org/groups/tpo/-/boards/2675?label_name[]=Project%20201
== Announcements == * Tor mid-year break: July 6-10 * no meeting on July 9 * arma talk at fossasia about snowflake is online * https://www.youtube.com/watch?v=J2r0rCdeDMQ == Discussion == * == Actions == * == Interesting links == * https://defcon.social/@thedarktangent/116823843127887175* Both VPN and email are well understood services, there is no shortage of people with expertise, it is not a big technical challenge to set up and operate... * Each became impossible or unattractive after talking to people who have operated them at deep levels over time. Here is why:
* https://dashboard.censoredplanet.org/cenalert.html * https://censoredplanet.org/papers/cenalert.pdf == Reading group == * We will discuss "" on * * Questions to ask and goals to have: * What aspects of the paper are questionable? * Are there immediate actions we can take based on this work? * Are there long-term actions we can take based on this work? ** Is there future work that we want to call out in hopes that others will pick it up?
* Next in the Reading Group Queue: * == Updates == Name: This week: - What you worked on this week. Next week: - What you are planning to work on next week. Help with: - Something you need help with. cecylia (cohosh): 2026-06-25 Last week:- fixed security issue in Snowflake where malformed webrtc offers and answers could cause crashes in the client, proxy, and broker (snowflake#40546) - worked on rate limiting feature of proxy fairness proposal (snowflake#40506)
Next week: - continue to review PT spec implementation in UAT- make proxy-bridge reachability checks robust to bridge outages (snowflake#40504)
- more work on letting broker inform proxies how often to poll - rate limiting- follow up about running shadow simulations for snowflake performance
- revisit conjure integration with lyrebird - take a look at potential snowflake orbot bug - https://github.com/guardianproject/orbot-android/issues/1183 dcf: 2026-07-02 Last week:- commented on meek-server file descriptor exhaustion https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/meek/-/issues/40007#note_3430752 - reviewed merge request to upgrade goptlib in meek https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/meek/-/merge_requests/2 - analyzed a fix for collector-rs packaging snowflake-stats tarballs incorrectly since April 2026 https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/work_items/40537#note_3432169 https://lists.torproject.org/mailman3/hyperkitty/list/network-health@xxxxxxxxxxxxxxxxxxxx/thread/NYUZV46KBSBLKG5SNKTGSHA3IS5MPJ7E/ - upgraded tor on snowflake bridges to 0.4.9.11 for security fixes https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/work_items/40548 - participated in discussion to update the UEFI certificat on the snowflake-01 bridge https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40547#note_3432215
Next week: Help with: meskio: 2026-07-2 Last week: - upgrade moat's meek server- reach out to FreshTomato community about integrating snowflake proxy
Next week: - AFK in a break Shelikhoo: 2026-07-02 Last Week:- [Testing] Unreliable+unordered WebRTC data channel transport for Snowflake rev2 (cont.)( https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/315 ) testing environment setup/research
- Merge request Reviews- [Research] proxy pool overload and potential blocking in Iran ( https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40077#note_3361718 ) - [Research] Add three NAT type buckets to the snowflake broker ( https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40077#note_3361718 ) - [Research] Request for Comment: Rust Library for TLS Fingerprint Imitation with Delegation Route Usage in Tor Browser) https://gitlab.torproject.org/tpo/applications/tor-browser/-/work_items/45056#note_3426867 (Done) - [Deployment] Release Webtunnel server v0.0.5 (https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/webtunnel/-/merge_requests/45) - [Research] Consider support of static file distribution(like Tor cached states) over amp cache to allow full Tor bootstrap over amp cache (https://gitlab.torproject.org/tpo/anti-censorship/team/-/work_items/198)
Next (working) Week/TODO: - Merge request reviews- [Deployment]Unreliable+unordered WebRTC data channel transport for Snowflake rev2 (cont.)( https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/315 ) Building custom Tor Browser with patch applied
- Vantage point maintaince- [Research] proxy pool overload and potential blocking in Iran ( https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40077#note_3361718 ) - [Research] Add three NAT type buckets to the snowflake broker ( https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40077#note_3361718 )
- Add 3 type nat bucket to snowflake broker - Implement TLS Delegate in Rust (cont.) onyinyang: 2026-07-02 Last week(s): - Work for project #170 to detect bridge blocking Next week: - Mid-year break - Continue tasks for project #170 Switch back to some of these: As time allows: - Continue work on rdsys#196- Continue Investigating rdsys#248 i.e., why dysfunctional webtunnel bridges are being distributed
- Troubleshooting conjure not connecting in China- waiting for more information from conjure authors/maintainers - Lox still seems to be filling up the disk on the rdsys-test server despite changes made to delete old entries, look into what's going wrong Blog post for conjure: https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/conjure/-/issues/46 - review Tor browser Lox integration https://gitlab.torproject.org/tpo/applications/tor-browser/-/merge_requests/1300
- add TTL cache to lox MR for duplicate responses: https://gitlab.torproject.org/tpo/anti-censorship/lox/-/merge_requests/305 - Work on outstanding milestone issues: - key rotation automation Later:pending decision on abandoning lox wasm in favour of some kind of FFI? https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43096):
- add pref to handle timing for pubkey checks in Tor browser - add trusted invitation logic to tor browser integration: https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/42974- improve metrics collection/think about how to show Lox is working/valuable
- sketch out Lox blog post/usage notes for forum (long term things were discussed at the meeting!):- brainstorming grouping strategies for Lox buckets (of bridges) and gathering context on how types of bridges are distributed/use in practice Question: What makes a bridge usable for a given user, and how can we encode that to best ensure we're getting the most appropriate resources to people? 1. Are there some obvious grouping strategies that we can already consider? e.g., by PT, by bandwidth (lower bandwidth bridges sacrificed to open-invitation buckets?), by locale (to be matched with a requesting user's geoip or something?) 2. Does it make sense to group 3 bridges/bucket, so trusted users have access to 3 bridges (and untrusted users have access to 1)? More? Less?
theodorsm: 2026-05-28 Last weeks: - Researching possible DTLS block in Russia- https://github.com/net4people/bbs/issues/603#issuecomment-4451730751
- Implementing DTLS 1.3 in pion Next weeks: - Implementing DTLS 1.3 in pion Help with: - Facilitator Queue: cohosh meskio onyinyang shelikhoo1. First available staff in the Facilitator Queue will be the facilitator for the meeting 2. After facilitating the meeting, the facilitator will be moved to the tail of the queue
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