Emproof Nyx is a binary-level software protection tool designed for embedded systems. It applies security protections directly to compiled binaries without requiring access to source code, making it suitable for protecting third-party, legacy, and already-deployed firmware. The tool is architecture-agnostic and supports a wide range of embedded hardware platforms, including ARM Cortex-M/A/R, Infineon TriCore, Renesas RH850, x86/x86_64/AARCH64, RISC-V, and embedded Linux environments. It targets sectors such as automotive, medical, aviation, industrial IoT, and semiconductors. Emproof Nyx integrates into existing development workflows without requiring changes to the build environment. It is compatible with common compilers including GCC and LLVM/Clang. Protection can be applied at various stages: during development, system integration, or post-deployment. Key protection capabilities include reverse engineering resistance and hacking protection, with additional support for Python code protection. The tool is designed with minimal overhead, making it suitable for resource-constrained embedded devices. Emproof Nyx can assist organizations in achieving compliance with security regulations such as the EU Cyber Resilience Act (CRA) and the US Cyber Trust Mark, including for legacy devices that cannot easily be redesigned.