A forensic technique utilized by the FBI in 2026 to recover deleted incoming messages from the Signal app on an iPhone, by extracting content stored in the device's push notification database, even after the app was uninstalled.

Refers to a high-profile case where federal investigators accessed Apple's internal notification cache using tools like Cellebrite, revealing temporary storage of message previews that bypasses standard deletion.

Highlights a privacy vulnerability in iOS ecosystems where lock screen notifications retain chat snippets, enabling law enforcement to reconstruct 'disappearing' communications from encrypted apps like Signal.