Crucial Exams

Certified Ethical Hacker (CEH) Practice Question

During an internal assessment, you discover that several smart-lighting controllers communicate with a local MQTT broker on the default port 1883 without TLS or authentication. Your goal is to capture and modify the publish/subscribe traffic in real time so you can toggle lights on demand without being detected. Which attack method would achieve this most directly?

  • Launch a continuous Wi-Fi deauthentication flood against the access point to force the controllers offline, then capture reconnection handshakes.

  • Deploy a rogue MQTT broker and use ARP spoofing to proxy client traffic, enabling a transparent man-in-the-middle position.

  • Perform a Zigbee touchlink key-extraction attack by channel-hopping near the fixtures.

  • Send a crafted BlueBorne payload to the light controllers' Bluetooth LE interface to gain code execution.

Certified Ethical Hacker (CEH)
Mobile Platform, IoT, and OT Hacking
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