0x01 / 0x0eHow do I hide who is talking to whom?

Anonymity Networks

Encryption hides what you say; anonymity networks hide that you said it. Onion routing, garlic routing and mix networks, from Tor's three hops to cover-traffic mixnets built to resist a global passive adversary.

Start here

Cover Traffic and Constant-Rate Padding Explainer Map: Metadata Privacy Map Mix Networks Explainer Oblivious HTTP and DNS Explainer Usable Sphinx Packet Format Explainer

Guides

Choosing a Secure MessengerEvery serious messenger encrypts content. They differ in what they require from you, what their servers learn, and whether they work when the internet does not. beginner 15 minutes Getting Around Internet CensorshipCensorship is an arms race between detection and disguise. Knowing which technique a censor is using tells you which tool will work. intermediate 30 minutes Publishing an Uncensorable WebsiteEvery single point of control is a point of censorship. Remove them one by one: the host, the domain, the location of the server, the format. advanced half a day Reducing Tracking: Browsers, DNS and FingerprintingMost surveillance is commercial and automatic. A few changes to your browser and network remove most of it. beginner 30 minutes Resilient and Relocatable InfrastructureThe networks on this site are only as strong as the infrastructure behind them. Here is how to run yours so that losing any one machine, provider or jurisdiction does not take it down. intermediate a weekend to set up, ongoing to run Run a private circumvention server for people you knowChoose who can connect, explain what you can observe, and practise replacing the server before someone depends on it. intermediate An afternoon, plus ongoing maintenance Running Infrastructure for FreedomEvery one of these networks is only as strong as the number of independent people running it. Here is how to become one of them. intermediate 10 minutes to a weekend Tails, Qubes OS and WhonixWhen a single mistake or a single exploit would be catastrophic, the operating system has to enforce the discipline for you. intermediate 1-3 hours Threat Modeling for Sovereign IndividualsBefore choosing a single tool, write down what you are protecting, who you are protecting it from, and what failure would cost you. beginner 45 minutes Using Tor SafelyTor hides where you are from the sites you visit and hides what you visit from your network. These are the habits that keep it working. beginner 20 minutes

Technologies

I2P (Invisible Internet Project) Deep dive Battle-tested SecureDrop Deep dive Battle-tested Tor Deep dive Battle-tested Bisqalso in money Deep dive Usable Cwtchalso in messaging Deep dive Usable DNSCrypt and dnscrypt-proxyalso in circumvention Deep dive Usable Hyphanet and Freenetalso in storage Deep dive Usable Mullvad VPNalso in circumvention Deep dive Usable Nym Mixnet Deep dive Usable OnionShare Deep dive Usable RoboSatsalso in money Deep dive Usable HOPR Deep dive Experimental Katzenpost Deep dive Experimental Quietalso in messaging Deep dive Experimental Veilid Deep dive Experimental HORNET Deep dive Research Loopix Deep dive Research Mixminion and Mixmaster Deep dive Historical

Reference and research

Choosing a private messengeralso in messaging Comparison Compare: Peer-to-Peer Bitcoin Acquisitionalso in money Comparison Usable Defending Against a Global Passive Adversary Threat model Mix Networks Research and Deployment Tracker Reference

Directory51 curated links

Tor Network

Lyrebird — Tor pluggable transport implementation supporting obfs4 and related bridge transports
Conjure — Refraction networking pluggable transport for censorship circumvention
Tor Project — Free software and decentralized network for anonymous communication
Tor Browser — Hardened Firefox browser configured for Tor
Onion Services — Hidden services accessible only within the Tor network
Tor Pluggable Transports — Censorship circumvention via obfs4, snowflake, and meek bridges
Snowflake — WebRTC-based pluggable transport for Tor censorship resistance
Snowflake GitHub — Original WebRTC pluggable transport repository with client, proxy, and library code
Snowflake 2.0 — Major 2025 update with improved obfuscation and scalability for high-censorship regions
WebTunnel — HTTP-based obfuscation transport simulating regular HTTPS traffic
Conjure — New pre-alpha pluggable transport available in Tor Browser nightlies
Tor2web caution — Access .onion services from a regular browser (trade-off: no anonymity) Tor2web gives no anonymity to the reader; use Tor Browser instead.
Onion-Location — HTTP header for revealing .onion sites via regular browsers
Tor Network Documentation — Comprehensive manual for using Tor effectively
Tor Browser: Unblocking Tor — Official guide to obfs4, meek, Snowflake, WebTunnel, bridges, and Lyrebird
Tor daemon bridge setup — torrc examples for obfs4, Snowflake, and WebTunnel pluggable transports

I2P (Invisible Internet Project)

I2P — Fully decentralized, self-organizing overlay network for anonymous communication
i2p.i2p GitHub — I2P Java implementation
I2Pd — Lightweight C++ implementation of I2P client
I2P+ — Enhanced Java I2P router distribution with improved console UX and performance tuning
I2P+ GitHub — Source repository for the I2P+ soft fork of the Java I2P router
I2P Botnet — Community resources and services on I2P
StormyCloud I2P Reseed — Public signed reseed server for bootstrapping new I2P routers
I2P 2.11.0 Release — Latest release with improved NTCP2 resistance to probing attacks
I2P 2.9.0 Release — June 2025 release with thread and performance improvements
awesome-i2p — Curated list of I2P implementations, libraries, projects, and resources

Mix Networks

Nym — Decentralized noise-generating mixnet providing network-level anonymity
Nym GitHub — Rust monorepo for Nym nodes, gateways, clients, SDKs, wallet, explorer, and network services
NymVPN — Cross-platform VPN application leveraging Nym's 5-hop mixnet for traffic privacy
NymVPN v2026.7 — Split tunneling (beta), post-quantum Lewes protocol, improved macOS authentication (April 2026)
NymVPN vs VPNs vs Tor vs I2P vs dVPNs — Detailed comparison of anonymity solutions
Nym NEAR Integration — Nym mixnet privacy for NEAR blockchain ecosystem
Nym 2026 Roadmap — Plans for enhanced censorship resistance and privacy features
NymVPN Censorship Resistance 2026 — Building decentralized VPN network for bypassing censorship
NymVPN dApp Mode — Route wallet traffic through mixnet via SOCKS5 proxy for blockchain metadata privacy
Katzenpost — Mix network research project and protocol specification
Katzenpost documentation — Formal mix network protocol specification
Katzenpost GitHub — Open source mix network implementation with post-quantum cryptography
Loopix Anonymity System — Piotrowska et al. (2017) — low-latency mixnet with cover traffic and provider-based anonymous messaging
Loopix Messaging — Experimental Go implementation of anonymous messaging using mix networks
Mixnet and ACN Research — Curated bibliography for mixnets and anonymous communication networks
Katzenpost FOSDEM 2025 — Post-quantum mixnet implementation in Go
Katzenpost Threat Model — Security assumptions and attack scenarios for the mixnet design
HOPR — Decentralized, metadata-private point-to-point data exchange protocol based on an incentivized mixnet

Related Privacy Infrastructure

Oblivious HTTP (OHTTP) — IETF protocol for anonymous HTTP transactions via relay
Oblivious DoH (ODoH) — DNS resolution via oblivious relay to hide client identity from resolver
RFC 9458: OHTTP — IETF standard for Oblivious HTTP

Oblivious Requests

Oblivious HTTP — RFC 9458: separate the relay from the service decrypting HTTP requests
Oblivious DNS over HTTPS — RFC 9230: separate the DNS proxy from the target resolver

Anonymous Sharing and Submissions

OnionShare — Share or receive files, host static sites and run chat rooms through Tor onion services on your own computer
SecureDrop — Freedom of the Press Foundation's newsroom submission system with onion services and an isolated document-viewing workflow

Full directory, all pillars →

Briefings6 latest

Mix Networks Friday — October 16 2026 Weekly UpdateOct 09 – Oct 16 2026 (W42) 2026-10-16 Mix Networks Friday — October 09 2026 Weekly UpdateOct 02 – Oct 09 2026 (W41) 2026-10-09 Mix Networks Friday — October 02 2026 Weekly Update2026-10-02 2026-10-02 Mix Networks Friday — September 25 2026 Weekly Update2026-09-25 2026-09-25 Mix Networks Friday — September 18 2026 Weekly Update2026-09-18 2026-09-18 Mix Networks Friday — September 11 2026 Weekly Update2026-09-11 2026-09-11

All Mix Networks Friday briefings →