Which keylogger type attaches to the PS/2 or USB interface and does not require software to function?

Which keylogger type attaches to the PS/2 or USB interface and does not require software to function?

• A. PS/2 and USB Keylogger
• B. Bluetooth Keylogger
• C. Acoustic/CAM Keylogger
• D. Wi-Fi Keylogger

Answer: (A)

Hardware keyloggers sit between the keyboard and the computer, capturing keystrokes at the hardware interface. When a device plugs into PS/2 or USB, it logs what the user types without needing any software on the target machine to run. This makes it independent of the host OS and applications, so it can function even if the computer is offline or has strict security controls. The other options rely on wireless transmission (Bluetooth or Wi‑Fi) or environmental capture (acoustic/cam), which require additional components, software, or configurations to exfiltrate the data. Thus, the inline PS/2/USB hardware keylogger is the best fit.

Hardware keyloggers sit between the keyboard and the computer, capturing keystrokes at the hardware interface. When a device plugs into PS/2 or USB, it logs what the user types without needing any software on the target machine to run. This makes it independent of the host OS and applications, so it can function even if the computer is offline or has strict security controls. The other options rely on wireless transmission (Bluetooth or Wi‑Fi) or environmental capture (acoustic/cam), which require additional components, software, or configurations to exfiltrate the data. Thus, the inline PS/2/USB hardware keylogger is the best fit.