Recently, I've been hearing a lot about this "message ephemerality" thing. What's its main purpose? Don't messages always stay on devices? Can the duration be adjusted, or is it platform-dependent? Generally, what kind of balance does it strike between security and misinformation?
What is message volatility and how does it work?
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Message “vanishing” is basically the “deleted messages” feature—data does stay on the device for a while, but it disappears after the user or the system automatically deletes it. The time frame depends on the app—24 hours on Signal, sometimes less on Snapchat. It’s good for security because no evidence remains, but it can cause problems in fighting misinformation since the messages can’t be recovered.