How I discovered a hidden microphone on a Chinese NanoKVM
NanoKVM is a hardware KVM switch developed by the Chinese company Sipeed. Released last year, it enables remote control of a computer or server using a virtual keyboard, mouse, and monitor. Thanks to its compact size and low price, it quickly gained attention online, especially when the company promised to release its code as open-source. However, as we’ll see, the device has some serious security issues. But first, let’s start with the basics. How Does the Device Work? As mentioned, NanoKVM is a KVM switch designed for remotely controlling and managing computers or servers. It features an HDMI port, three USB-C ports, an Ethernet port for network connectivity, and a special serial interface. The package also includes a small accessory for managing the power of an external computer….
