During a scheduled red team engagement at a regional investment firm in Phoenix, Arizona, security...

The correct answer is C. Wi-Fi Keylogger.

The device is physically placed inline between the keyboard and the desktop, so it is hardware-based. However, the defining feature in the question is that it forwards captured keystrokes over the organization’s wireless environment. That makes the most precise answer Wi-Fi Keylogger.

CEH system hacking material explains that keylogging is the process of monitoring or recording user keyboard actions and that keyloggers may be hardware-based or software-based. It also lists wireless-capable hardware devices such as KeyGrabber Nano Wi-Fi and KeyGrabber Wi-Fi Premium among hardware keylogging devices .

Option A. Hardware Keylogger is broadly true, but less precise because the question emphasizes wireless forwarding.

Option B. Acoustic/CAM Keylogger is incorrect because the device is not inferring keystrokes from sound, camera capture, or electromagnetic observation.

Option D. Bluetooth Keylogger is incorrect because the scenario specifies forwarding through the company’s Wi-Fi environment, not Bluetooth.

Therefore, the best answer is C. Wi-Fi Keylogger.