Apple fixed the vulnerability. The US police once used this vulnerability to extract deleted chat records from Apple phones.

Apple pushed software updates for iPhone and iPad this Wednesday, fixing a security vulnerability. The U.S. law enforcement agencies were previously able to exploit this vulnerability to extract chat messages that were manually deleted or automatically disappeared within messaging apps. The cause of the vulnerability is that notification messages displaying message content are cached on the device for up to a month. Apple stated in a security advisory on their official website that this vulnerability could result in deleted notification content remaining on the device unintentionally. This incident is clearly related to an event exposed earlier this month by independent media 404Media. The media revealed that the FBI could extract deleted messages from Signal app on Apple phones using electronic forensic tools. This is because messages that have been displayed on the phone's notification bar will still be stored in the local database even if the user deletes them within the app. After the revelation, the CEO of the encrypted messaging app Signal, Meredith Whittaker, stated that the app has requested Apple to solve this issue. Whittaker posted on the social platform Bluesky, saying that the notification content of deleted messages should not be retained in the notification database of any operating system.