Every embedded device has a debug interface hiding somewhere on the board. Manufacturers need it to flash firmware and run diagnostics on the production line — and more often than you’d expect, tha...

I built an intentionally vulnerable BLE smart lock on an ESP32 and then broke into it using nothing but my phone. No custom scripts. No Linux machine. No Flipper Zero. Just nRF Connect — a free ap...

Introduction MQTT is everywhere in IoT. Agriculture, manufacturing, smart cities, energy monitoring — all of them running thousands of sensors and actuators over the same lightweight pub/sub proto...

📢 Introduction Operational Technology (OT) environments rely heavily on legacy industrial protocols such as Modbus TCP for communication between PLCs, sensors, and SCADA systems. While these proto...

Hardware security assessments often go beyond software and firmware into direct chip-level analysis. In this blog, I demonstrate a real-world EEPROM extraction and analysis performed on an HP DeskJ...

👤 About Harsh Srivastava IoT/OT Penetration Tester Embedded Security Hardware Security Firmware Analysis 📧 harsh01200@gmail.com     ...