Attachments

Photos and files, as private as your messages.

• Attach a file to any chat, or save one you've received to your computer.
• Each file is encrypted on your device before it leaves, with a key only the chat holds.
• It is stored in fixed-size pieces, and its size is rounded up, so the servers can't tell what it is from exactly how big it is.
• The pieces are spread across several servers, so losing one doesn't lose the file.