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Undocumented Commands Found In Bluetooth Chip Manufactured in China Used By a Billion Devices.
(www.tarlogic.com)
Source Link Privacy.
Tarlogic Security has detected a backdoor in the ESP32, a microcontroller that enables WiFi and Bluetooth connection and is present in millions of mass-market IoT devices. Exploitation of this backdoor would allow hostile actors to conduct impersonation attacks and permanently infect sensitive devices such as mobile phones, computers, smart locks or medical equipment by bypassing code audit controls.
Update: The ESP32 "backdoor" that wasn't.
Esp-home also works with the older esp-01 - it was released as a wifi module so there are only two gpio’s, but thats enough for a lot of home automation stuff.
Here’s one i have connected to HA, where HA uses rest-api to capture some data from a game called tacticus, and it shows my available tokes for guild raid and arena