💡 A. Numerous and consistent attacks on the company's website caused the server to crash and service was disrupted: This describes a Denial-of-Service (DoS) attack, not spear phishing. Spear phishing involves targeted deception, whereas a DoS attack is meant to overwhelm a system. B. A person posing as a representative of the company's IT help desk called several employees and played a generic prerecorded message requesting password data: This is an example of vishing (voice phishing) or social engineering, but not spear phishing, which specifically involves personalized email attacks. C. A person received a personalized email regarding a golf membership renewal, and he clicked a hyperlink to enter his credit card data into a fake website: This is the correct answer. Spear phishing is a highly targeted phishing attack that uses personal information to deceive the victim. The attacker customizes the message based on the recipient’s interests, making it more convincing. D. Many users of a social network service received fake notifications of a unique opportunity to invest in a new product: This is an example of general phishing or a scam campaign, but it is not spear phishing, because it targets a broad audience rather than a specific individual.