Stefan Kremser

Stefan Kremser (known as Spacehuhn online) is a computer science student and the creator of the ESP8266 Wi-Fi Deauther. His work in opening low-cost microcontrollers to security research includes projects like the Wi-Fi Duck, a Wi-Fi-connected HID attack tool, and the Arduino PCAP library, which allows low-cost Arduino devices to serve as packet sniffers. His programs have been implemented into Wi-Fi hacking wearables and enabled advanced Wi-Fi attacks like unmasking or capturing nearby Wi-Fi devices. You can join his Discord community here:


Advanced Wi-Fi Hacking With $5 Microcontrollers

With the price of ESP8266 and ESP32 development boards dropping to between $1 and $5, the Wi-Fi hacking community has embraced these tools as platforms for security research. Kody will go over the capabilities of these extraordinary devices and demonstrate the community projects that take advantage of them. This talk will cover a Wi-Fi deauther and network cloner with a web GUI, advanced serial CLI interfaces to enable packet sniffing and monitoring, unmasking modern MAC address privacy protections to track mobile devices, and brute-force discovery of trusted networks stored in nearby Wi-Fi devices. Kody will also show how these microcontrollers have been used to create safe and fun Wi-Fi hacking CTF games for beginners. Attendees will learn how these ultra-cheap devices embedded in most "smart" light bulbs can disable Wi-Fi security cameras, reveal work and personal affiliations by identifying previously joined networks, and track the location of their smartphone in public.