Cybersecurity in Modbus Microcontroller Projects: Secure Modbus TCP/RTU Design, Threat Modeling and ESP32 Hardening
A zero-to-expert guide to securing Modbus projects on microcontrollers. Learn the protocol, understand its attack surface, design a defense-in-depth architecture, harden register access and firmware, and build a practical ESP32 Modbus TCP device with strict validation and a Python client.