The O.MG Cable is arguably the most covert implant in the Hak5 ecosystem. It's a USB cable that looks, feels, and functions exactly like a normal cable — same thickness, same flexibility, same 5V charging and 480 Mbps USB 2.0 data passthrough. Hidden inside the USB-A connector head is a fully functional implant: a microcontroller, WiFi radio, web server, and storage. The target will never know it's not a stock cable. Created by MG (Mischief Gadgets), now distributed by Hak5.

The USBNinja cable architecture is distinct from the O.MG cable. Where O.MG uses WiFi + ESP32, the Ninja Cable uses Bluetooth LE + ATtiny85 with V-USB and adds a Hall effect sensor for magnetic ring triggering. The firmware is fully open-source and well-documented. Here's how to build a functional clone, from easiest to most authentic. This is a guide on how to build your own USBNinja cable.

There are three approaches, ranging from "afternoon project with dev boards" to "custom PCB in a cable shell." I'll walk through all of them so you can pick the right one for your needs. This is a guide on how to build your own O.MG Cable.