Design and implementation of a secure IoT dashboard for cold room management using penetration testing methods

Abstract

The rise of Internet of Things (IoT) technologies has transformed environmental monitoring systems, yet many implementations overlook critical cybersecurity vulnerabilities. This paper presents the design and implementation of a secure real-time dashboard for cold room management, built on an ESP32 microcontroller and Flask-based web server. The system collects temperature, humidity, and presence data via digital sensors, and transmits it wirelessly for visualization through a responsive web interface. Unlike traditional approaches, this work integrates penetration testing techniques directly into the development lifecycle, simulating real-world attacks such as Denial of Service (DoS), SQL injection, Man-in-the-Middle (MitM), and Wi-Fi de-authentication. Each simulated attack is followed by the deployment of specific countermeasures, including HTTPS encryption, rate limiting, input validation, and secure coding practices. The result is a functional and resilient system that not only ensures operational reliability but also provides a practical framework for securing IoT deployments in resource-constrained environments. This work highlights the importance of embedding cybersecurity by design in IoT architectures and offers a low-cost, extensible solution for critical infrastructure monitoring.