BadUSB Attack Explained: From Principles to Practice and Defense

This post explains the workings of the BadUSB attack, from its origin at the Black Hat 2014 conference to a practical implementation using an Arduino UNO and custom HID firmware. The attack exploits the lack of strict control over USB device types, allowing a USB drive to impersonate a keyboard and inject malicious commands without user interaction. The post also covers real-world defense strategies, including group policy restrictions and endpoint protection.