Apple has addressed a significant security flaw in its iPhones and iPads that allowed law enforcement, including the FBI, to access deleted messages from the Signal messaging app. The issue was linked to a bug that caused notifications of deleted messages to be cached on devices for up to 30 days. This vulnerability was highlighted by a report from 404 Media, which revealed that the FBI could extract these messages using forensic tools, even after users had deleted them from Signal. In response, Apple released a software update on April 22, ensuring that notifications marked for deletion would no longer be retained on devices. Signal, known for its strong encryption and privacy features, expressed concern over the incident, with Signal president Meredith Whittaker stating that deleted message notifications should not persist in any operating system's notification database. This incident has raised broader concerns about the trustworthiness of end-to-end encryption used by messaging apps like Signal and WhatsApp, especially in light of a recent class action lawsuit against WhatsApp for allegedly intercepting private messages despite its encryption promises.