this post was submitted on 09 Apr 2026
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FBI Extracts Suspect’s Deleted Signal Messages Saved in iPhone Notification Database (www.404media.co)
submitted 22 hours ago by Hubi@feddit.org to c/technology@lemmy.world
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[–] Fmstrat@lemmy.world 2 points 13 hours ago (1 children)

Not true.

The push notification for most messengers is a ping with little to no data in it, telling the app to grab messages directly via TLS. That's how e2e works with push.

[–] bearboiblake@pawb.social 1 points 13 hours ago* (last edited 13 hours ago) (1 children)

As I wrote elsewhere:

It depends on the app. Some apps do (or can be configured to) indeed send “empty”/blank notifications which just notify you that you’ve received a new message from an app, but not from whom, or what the message contains.

However most apps by default will contain more data, such as who the message is from, and some/all of the sent message body.

If you get a push notification on your phone, everything you see in that notification must by definition pass through the push notification service.

I'd disagree with "most messengers" doing that, in my experience, most don't do it by default. Signal is a pretty rare exception to do so by default.

[–] Fmstrat@lemmy.world 1 points 3 hours ago

I'd disagree with "most messengers" doing that, in my experience, most don't do it by default. Signal is a pretty rare exception to do so by default.

What messenger doesn't? Signal, WhatsApp, Matrix, Snapchat, Discord, Telegram, etc. I'd say "most" is pretty accurate. No idea what Wechat does, but that's a whole different story.

If you get a push notification on your phone, everything you see in that notification must by definition pass through the push notification service.

Also not true. What you "see" could have been retrieved post-notification, as described in the message you responded to. What you see has nothing to do with what goes through the push service and is a full technical inacurracy.