Final answer:
A spam email campaign targeting the head of an organization is described by the method called Spear Phishing. This targeted attack focuses on a single individual by including personalized information to appear convincing.
Step-by-step explanation:
The attack method that best describes a spam email campaign targeting the head of an organization is c) Spear Phishing. Spear phishing is a more targeted version of phishing where attackers focus on a specific individual or organization. In this case, the head of an organization is singled out, usually because they have access to sensitive information or systems. Unlike general phishing campaigns that are sent to large numbers of people, spear phishing is tailored to the victim, often including personal information or relevant details to make the scam more convincing.
Hackers use various methods to lure individuals, such as manipulating human psychology or exploiting security vulnerabilities. It is important for individuals to be vigilant and skeptical of unsolicited emails, especially those that request sensitive information or urge the recipient to click on links.