this post was submitted on 07 Apr 2026
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207
Signal messages retrieved from iOS notification, as seen in Prairieland federal trial (infosec.pub)
submitted 18 hours ago by frocalannifo@fedia.io to c/technology@lemmy.world
53 comments fedilink hide all child comments
 

TLDR: signal content in Apple notification can be retrieved even after signal app deletion.

I saw from this reddit thread: Signal messages retrieved from iPhone after uninstalling app. : signal

Referencing this news article: Pretti Killing May Affect ICE Prairieland "Antifa Cell" Terrorism Trial

The mention of signal is in court documents here: March 10: Federal Trial Day 12 - Support the Prairieland Defendants

Signal chat evidence from Sharp’s device (Exhibit 158):
Messages were recovered from Sharp’s phone through Apple’s internal notification storage — Signal had been removed, but incoming notifications were preserved in internal memory. Only incoming messages were captured (no outgoing).

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[–] anon_8675309@lemmy.world 8 points 2 hours ago (1 children)

That’s my biggest issue with notifications. Notifications should just notify you that something happened and you need to open the app to find out. Carrying actual data ON the notification is a no-no.

But what do I know, I’m an old developer not one of these modern vibe kiddies.

[–] baggachipz@sh.itjust.works 4 points 2 hours ago (1 children)

A notification doesn’t have to carry any data in its payload; Signal devs could take care of that.

[–] rezifon@lemmy.world 3 points 1 hour ago (1 children)

Signal has supported this for many years. Users can choose full content notifications, name only, or no-content notifications.

[–] baggachipz@sh.itjust.works 1 points 27 minutes ago

I believe what’s in the payload is not the same as what the user chooses to see. That is, it’s sent no matter what but the user can set what’s visible on the lock screen. I could be wrong though.