Which keylogger uses electromagnetic sound or a camera to capture keystroke data?

Which keylogger uses electromagnetic sound or a camera to capture keystroke data?

• A. External Keylogger
• B. Bluetooth Keylogger
• C. Acoustic/CAM Keylogger
• D. Wi-Fi Keylogger

Answer: (C)

Keystroke data can be captured through side channels that observe typing rather than directly intercepting the keyboard signals. Acoustic keylogging listens to the sounds each key makes, and with analysis, those sounds can be mapped back to the corresponding keys. Camera-based keylogging (CAM) does the same thing visually by recording or analyzing the keyboard to determine which keys are pressed. When you combine these approaches, you get Acoustic/CAM keylogging, a method that relies on observing typing through sound or vision rather than placing a hardware interceptor on the keyboard or using wireless transmissions. The other options describe hardware or wireless capture methods that don’t involve listening to sounds or watching keystrokes on a camera.

Keystroke data can be captured through side channels that observe typing rather than directly intercepting the keyboard signals. Acoustic keylogging listens to the sounds each key makes, and with analysis, those sounds can be mapped back to the corresponding keys. Camera-based keylogging (CAM) does the same thing visually by recording or analyzing the keyboard to determine which keys are pressed. When you combine these approaches, you get Acoustic/CAM keylogging, a method that relies on observing typing through sound or vision rather than placing a hardware interceptor on the keyboard or using wireless transmissions. The other options describe hardware or wireless capture methods that don’t involve listening to sounds or watching keystrokes on a camera.