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In version 8.30, Signal completed the availability of encrypted conversation backups on Android, iOS, Linux, macOS, and Windows, with support for local backups without size limits and direct data transfer between iPhones.
This article explains why digital forensics teams may need to go beyond software tools when dealing with devices that use secure boot, secure elements, and trusted execution environments. It also presents a framework for determining the need for side-channel analysis or fault injection, and for building capabilities in-house or relying on specialized expertise.