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Which of the following is an example of a cyber-attack on physical infrastructure?

9. Which of the following is an example of a cyber-attack on physical infrastructure?

1. Phishing attack on employee's email
2. DDoS attack on the company's server
3. Stuxnet attack on an irrigation control system
4. Ransomware attack on company's server

Answer: C) Stuxnet attack on an irrigation control system.

Explanation:

The Stuxnet attack is an example of a cyber-attack on physical infrastructure. The worm used in this attack was designed to infiltrate and manipulate Programmable Logic Controllers (PLCs) used in centrifuges to enrich uranium.