iOS 26.4.2 and iOS 18.7.8 Address Notification Privacy Flaw Highlighted by FBI Case NMUG NewsroomApril 22, 2026TidBITS The FBI extracted Signal messages from an iPhone by exploiting a notification database flaw. Apple has now released iOS 18.7.8 and iOS 26.4.2 to fix a bug that allowed deleted notifications to persist on devices.