Potential sketchy hardware: teensy

[abeluck]

The Teensy is a USB dev board that appears as an HID when plugged in. It's become popular as a keystroke injection tool.

• kautilya - a toolkit which provides various payloads for Teensy device which may help in breaking in a computer
• Programmable HID USB Keystroke Dongle: Using the Teensy as a pen testing device

I don't have one, otherwise I'd contribute udev rules to detect it.