Undocumented commands found in Bluetooth chip used by a billion devices post, maart 8, 2025maart 10, 2025 The ubiquitous ESP32 microchip made by Chinese manufacturer Espressif and used by over 1 billion units as of 2023 contains undocumented commands that could be leveraged for attacks. The undocumented commands allow spoofing of trusted devices, unauthorized data access, pivoting to other devices on the network, and potentially establishing long-term persistence. Undocumented commands found in Bluetooth chip used by a billion devices: Undocumented commands found in Bluetooth chip used by a billion devices geopolitics supply chain attack vulnerability 2025China