How do I share files privately in 2026?

For one-off file transfers with no operator in the path, OnionShare runs a temporary Tor onion service from your machine — the recipient fetches over Tor and nothing persists after you close the app. For collaborative editing, CryptPad is end-to-end encrypted (operator cannot read content) and works in the browser. For persistent shared files, end-to-end encrypted storage like Tresorit or Filen with explicit recipient links is the right model. Avoid: email attachments (transit metadata visible), Google Drive / Dropbox links (operator-readable), WeTransfer (no E2E). For very small files via existing E2E channels, Signal attachments with disappearing-messages on works.