All experience
Hydroficient
IoT Cyber Defense Extern
I secured an IoT sensor pipeline for a simulated 500-room hotel water management system. I designed and stress-tested a 5-layer defense stack (TLS encryption, mutual TLS device authentication, HMAC message signing, timestamp validation, and sequence counters) against attack classes I built myself: eavesdropping, sensor spoofing, and replay attacks. Per-device certificates brought unauthorized broker access to zero, and I trained an Isolation Forest anomaly detection model wired into a real-time Streamlit dashboard so non-technical staff could monitor security without touching a terminal.