What is TrustZone, and how is it implemented on STM32 microcontrollers?

May 19, 2025 · 3 min read · TrustZone is a hardware-based security feature developed by ARM to support secure and non-secure execution environments on the same processor. It's a key part of ARMv8-M architecture, used to build secure embedded applications. 🔐 What is ARM TrustZ...