Abstract: Wireless networks are increasingly vulnerable to attacks that exploit weaknesses in the IEEE 802.11 protocol, particularly through the misuse of unencrypted management frames. One such attack is the WiFi deauthentication attack, which forcibly disconnects clients from access points by sending forged deauth packets. This project presents the design and implementation of a portable WiFi deauthentication device using the ESP8266 microcontroller, an SSD1306 OLED display, and button-based navigation.The device enables users to scan nearby WiFi networks, select targets, and initiate deauthentication attacks in a controlled and ethical environment. It serves as a practical tool for security researchers, ethical hackers, and educators to demonstrate wireless vulnerabilities and promote awareness of network security best practices. The system is fully standalone, requiring no external computer or software, and is built using open-source libraries and firmware.

Keywords: “WiFi Deauthentication, ESP8266, Ethical Hacking, Wireless Security, 802.11 Protocol".

Downloads: | DOI: 10.17148/IARJSET.2025.121019