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FBI Accesses Encrypted Signal Messages via Push Notifications on Seized iPhone
The FBI obtained copies of encrypted Signal messages from a defendant's iPhone through push notifications stored in the device's memory, even after the app was removed. This issue affects all apps using push notifications. Users can adjust Signal settings to limit notification content visibility.
Apr 11, 6:30 AM·1m read1 source
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via Push Notifications on Seized iPhone
The FBI accessed encrypted messages sent to a seized device by obtaining push notifications stored in the device's internal memory. This occurred after the app had been removed from it.
Push notifications include message content, which remains in memory even if the app is deleted. This vulnerability applies to all apps that send push notifications. Users can modify settings to prevent displaying message content or sender names in notifications.
To adjust settings, open the app, navigate to Settings, then Notifications, and select options such as Name Only or No Name or Content. These changes apply to future notifications. The report highlights how such stored data can be accessed during device seizures.
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