Client-side AES-256
Files are encrypted in your browser before they ever leave your device. Keys never reach our servers.
About Sisserou
Sisserou OnionSharing is a privacy-first file transfer tool. We don't see your files. We don't see your contacts. We don't see your IP. That's the point.
Onion v3 Hidden Services
Every share gets a fresh 56-character v3 onion address — accessible only through the Tor network.
No metadata, no logs
No accounts, no IPs, no analytics. Files self-destruct on first read or when their timer hits zero.
3-hop relay routing
Traffic bounces through independent volunteer relays so no single party sees both endpoints.
Burn after read
Single-use links wipe themselves the moment the first download finishes. No second chances.
Open by design
Built on the same primitives used by journalists, whistleblowers, and human-rights workers worldwide.
Manifesto
Privacy isn't a feature — it's a baseline. Sisserou exists for the journalist who needs to receive a leak without endangering a source, for the activist organizing under surveillance, and for anyone who believes a file shouldn't require a corporate account to move from point A to point B.