> For the complete documentation index, see [llms.txt](https://docs.u2dpn.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.u2dpn.xyz/decentralize-data-transmission-network/privacy-and-security.md).

# Privacy & Security

* End-to-end encryption with QUIC/TLS and optional overlay AEAD.
* Metadata minimization: only session hashes stored on-chain.
* Censorship resistance with multi-hop routing and distributed egress.
* Flexible provider deployments across desktop, mobile, and embedded devices.