Our one-to-one digital conversations are supposed to be intimate, and systems like end-to-end encryption are in place to keep them that way. Still, all our messages and media files remain on at least two devices unless manually deleted, and their unencrypted backups on apps like WhatsApp are simply a giant loophole asking to be exploited. Ephemeral messaging is often touted as a quick fix to this menace, and Signal is toying with the idea in its beta app that now lets you send single-view media files.

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