Certified Ethical Hacker (CEH) Practice Question

You have successfully obtained remote desktop access to an engineering workstation inside a chemical plant's OT subnet. Before attempting any changes to the process, you want to follow a proven OT hacking methodology that keeps operational risk low while providing you the information needed for later manipulation. What is the most appropriate next step?

  • Immediately launch a TCP SYN-flood against the HMI to force operators into restart procedures.

  • Alter the SCADA historian database so that management sees falsified production data.

  • Enumerate connected PLCs with the vendor's programming software and download their running logic for offline analysis.

  • Send crafted Modbus write-coil commands to every PLC to toggle actuator states in real time.

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