With the Security Upgrade Kit, Swissbit offers a user-friendly and powerful solution for protecting embedded systems and meeting cyber-security requirements. The kit consists of a robust industrial-grade microSD card as well as complementary software, tools and documentation. It combines hardware-based access control with real-time AES-256 data encryption and enables the customization of protection profiles. Typical applications include protecting sensitive data from unauthorized access and ensuring system integrity through secure boot. Thanks to the microSD form factor, the Security Upgrade Kit can be used to retrofit existing systems.