A Human Interface Device (HID) attack is a sophisticated cyber threat that exploits the trust placed in standard input devices like keyboards and mice. Typically executed via a malicious USB device, these attacks leverage the universal nature of USB drivers to bypass traditional security measures and execute malicious code.
The core concept behind HID attacks is deceptively simple: A modified USB device, often indistinguishable from legitimate peripherals, is crafted to mimic keyboard or mouse input. When plugged into a target system, this device can rapidly execute a pre-programmed sequence of keystrokes or mouse movements, potentially installing malware, stealing data, or gaining unauthorised system access. The speed and precision with which these actions can be performed often outpace human capabilities, making detection extremely difficult.
The effectiveness of HID attacks stems from their ability to circumvent standard security protocols. Unlike traditional malware, which relies on user interaction or vulnerabilities in software, HID attacks operate at a lower level directly manipulating the system's input. This makes them particularly dangerous in environments with stringent security measures, as they can bypass firewalls, intrusion detection systems, and endpoint protection solutions.
To defend against HID attacks, organisations must implement a multi-layered security approach. This includes strict device control policies, employee awareness training about the risks of unauthorised USB devices, and network segmentation to limit lateral movement. Additionally, advanced Endpoint Detection and Response (EDR) solutions can provide valuable insights into suspicious device activity.
