The cheap WLAN and Bluetooth chips from the manufacturer Espressif, ESP32, contain undocumented commands in the Bluetooth hardware communication in current firmware versions. This opens up a security ...

Using Bluetooth on a desktop computer is now such a seamless process; it’s something built-in and just works. Behind that ubiquity is a protocol layer called HCI, or Host Controller Interface, a set ...

Espressif’s popular ESP32 microchip, found in over a billion devices, has been caught with its digital trousers down, thanks to an undocumented "backdoor" lurking in its Bluetooth firmware. For those ...

Typically associated with circuitry projects and real-time operating systems, microcontrollers are great for tinkerers who prefer working with embedded devices. But unlike their SBC counterparts, you ...

A real-time mirrored heads-up display (HUD) for vehicles, built with Android and ESP32. This app uses GPS data from your phone and sends live speed updates over Bluetooth to an ESP32 microcontroller, ...

This Android app connects to an ESP-32 microcontroller via Classical Bluetooth (SPP) and facilitates message exchange. The ESP-32 acts as a bridge between serial communication and Bluetooth, sending ...

Update 3/9/25: After receiving concerns about the use of the term 'backdoor' to refer to these undocumented commands, we have updated our title and story. Our original story can be found here. The ...

Recently there was a panicked scrambling after the announcement by [Tarlogic] of a ‘backdoor’ found in Espressif’s popular ESP32 MCUs. Specifically a backdoor on the Bluetooth side that would give a ...

Operating systems come in all kinds of shapes and sizes, and just a few decades ago, it wasn't uncommon to run an operating system on a computer with a clock speed of a few hundred megahertz paired ...