FBI used iPhone notification data to retrieve deleted Signal messages (9to5mac.com)

• Apple notification logs allow forensic access to message fragments.
• Operating system caches negate local app-level data deletion.
• Challenges to privacy guarantees within centralized hardware ecosystems.

"US law enforcement has successfully bypassed Signal's end-to-end encryption by leveraging metadata logs from Apple's push notification services. By subpoenaing system logs, the FBI retrieved message snippets stored in temporary caches after notifications were delivered to the device, effectively recovering allegedly deleted content. This highlights a critical intersection between mobile operating system architecture and privacy-focused communication apps."