There are lots of mechanical keyboards out on the market now. When you buy one from a known name it's likely there's nothing nefarious going on. But no name peripherals have flooded the market. Cheap keyboards that offer many features at a much cheaper price.
It seems reasonable to be suspicious here. I know keyboards act as a HID to the computer, but can a usb keyboard do more? Could the controller on the keyboard capture sensitive data and send it to the bad guys? passwords, secrets, messages, etc.
I know keyloggers are a thing but they seldom are the keyboard themselves.
is this possible?