1) Rubber Ducky - a commercial keystroke injection attack platform released in 2010. Once connected to a host computer, the Rubber Ducky poses as a keyboard and injects a preloaded keystroke sequence.
2) PHUKD attack platforms - similar to Rubber Ducky, but allows an attacker to select the time when it injects the malicious keystrokes.
3) Evilduino - similar to PHUKD, but uses Arduino microcontrollers instead of Teensy. Also works by emulating a keyboard/mouse and can send keystrokes/mouse cursor movements to the host according to a preloaded script.
4) RIT attack via USB mass storage - attack described in a research paper. It relies on changing the content of files while the USB mass storage device is connected to a victim's computer.
5) Default Gateway Override - an attack that uses a microcontroller to spoof a USB Ethernet adapter to override DHCP settings and hijack local traffic.