RattaGATTa: Scalable Bluetooth Low-Energy Survey – GreyNoise Labs

The article describes an exploration into Bluetooth Low-Energy (BTLE) privacy and security, initiated by cloning a lost Fitbit's Bluetooth profile to track it. The author discusses the complexity of working with BTLE, the challenges in measuring its security risks, and the lack of comprehensive tools to gather meaningful data. The project, RattaGATTa, proposes a $100 hardware setup to collect detailed BTLE data, enabling device fingerprinting and improving security analysis. The write-up also highlights real-world radio frequency challenges and iterative software development using an ESP32-based IoT kit to better understand BTLE behavior.