Hey everyone!

Here are our meeting logs: http://meetbot.debian.net/tor-meeting/2024/tor-meeting.2024-05-16-16.00.html

And our meeting pad:

Anti-censorship work meeting pad -------------------------------- Anti-censorship --------------------------------

Next meeting: Thursday, May 30 16:00 UTC Facilitator: meskio ^^^(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: onyinyang

== 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 sponsors, we are working on:         * All needs review tickets:             * https://gitlab.torproject.org/groups/tpo/anti-censorship/-/merge_requests?sc...         * Sponsor 96 <-- meskio, shell, onyinyang, cohosh             * https://gitlab.torproject.org/groups/tpo/-/milestones/24         * Sponsor 150 <-- meskio working on it             * https://gitlab.torproject.org/groups/tpo/anti-censorship/-/issues/?label_nam...

== Announcements ==

* No meeting May 23, we are at the tormeeting

== Discussion ==

- 0.4.7.x bridges removal (2024-05-16: 500 bridges running EOL): https://metrics.torproject.org/rs.html#search/type:bridge%20version:0.4.7%20

== Actions ==

== Interesting links ==

* https://t.me/s/tor_bridges https://t.me/s/vanilla_bridges         * Telegram channels handing out bridges, found at https://ntc.party/t/7701/4     * https://github.com/jmwample/ptrs         * By Jack Wampler, abstraction for building pluggable transports in Rust, obfs4 implementation, and "lyrebird" multi-transport binary.     * https://github.com/theodorsm/covert-dtls         * covertDTLS is a library inspired by uTLS for offering fingerprint-resistance features to pion/dtls.     * https://opencollective.com/censorship-circumvention/projects/snowflake-daily...     * https://www.youtube.com/watch?v=w3QVkw7Beqc         * onyinyang gave a presentation on snowflake for TechSoup's Securing the Future panel discussion (along with FPF, Quiet and EFF)

== Reading group ==     * We will discuss "Communication Breakdown: Modularizing Application Tunneling for Signaling Around Censorship" on May 30         * https://petsymposium.org/popets/2024/popets-2024-0027.php         * 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?

== 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): 2024-05-09     Last week:         - Updated dependencies for various projects         - Shadow simulations             - https://github.com/cohosh/ptnettools         - Lox-wasm integration test fixups         - Opened an issue about Lox blockage migration     This week:         - upload new snowflake-webext version 0.8.2 to both Firefox and Chrome web stores         - make changes to Lox encrypted bridge table             - https://gitlab.torproject.org/tpo/anti-censorship/lox/-/merge_requests/147         - follow up on reported SQS errors         - update wasm-bindgen fork to fix some bugs and hopefully upstream changes         - create a Lox test environment and instructions for the browser team             - https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/42503     Needs help with:

dcf: 2024-05-16     Last week:         - snowflake azure cdn bookkeeping https://gitlab.torproject.org/tpo/anti-censorship/team/-/wikis/Snowflake-cos...         - archived snowflake-webextension-0.8.2 https://archive.org/details/snowflake-webextension-0.8.2     Next week:         - review snowflake unreliable+unordered data channels rev2 https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...         - open issue to have snowflake-client log whenever KCPInErrors is nonzero https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...             - parent: https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...         - open issue to disable /debug endpoint on snowflake broker         - move snowflake-02 to new VM Help with:

meskio: 2023-05-16     Last week:         - add journaling to rdsys persistency so data don't get lost if an unexpected restart (rdsys#201)         - make errors explicit on distributor assignments in rdsys (rdsys#200)         - deploy rdsys backend with persistency on bridge assignments         - investigate problems with renovate (rdsys#202)     Next week:         - tormeeting

Shelikhoo: 2024-05-16     Last Week:         - [Merge Request Waiting] Add Container Image Mirroring from Tor Gitlab to Docker Hub(https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...)             - [Merge Request] Snowflake Performance Improvement rev2 (https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...)                 - Merge request reviews     Next Week/TODO:         - In person tor event!         - Merge request reviews

onyinyang: 2023-05-16     Last week(s):         - Hyper upgrade and tokio upgrade         - prepared and presented  for techsoup panel https://www.youtube.com/watch?v=w3QVkw7Beqc         - key rotation implementation     This week:         - key rotation implementation         - begin implementing some preliminary user feedback mechanism to identify bridge blocking based on Vecna's work     Next week:         - FOMO and sadness :(         - 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!): https://pad.riseup.net/p/tor-ac-community-azaleas-room-keep         - 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: 2023-05-16         Last weeks:             - Pion dtls have merged my PR for  hooking of client hellos, server hellos and certificate request (https://github.com/pion/dtls/pull/631).             - Quick test with my mimicking library (https://github.com/theodorsm/covert-dtls) with snowflake: promising results             - Writing for my thesis         Next weeks:             - Add hook to pion/webrtc so it can be used in snowflake.             - Further test and validate mimicked client hello with snowflake.             - Add randomized fingerprint             - Writing my thesis             - Might explore some stateful attacks/fingerprints         Help with:

Facilitator Queue:     onyinyang meskio shelikhoo 1. 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