In which phishing attack does the attacker imitate the style of legitimate emails?

The answer pertains to a phishing attack where the attacker mimics the style and formatting of legitimate emails to deceive the recipient. In a CEO scam, the attacker often impersonates a person in a position of authority, such as a company's CEO, and uses language and a tone that mirrors official communication. This technique aims to create a sense of urgency or authority, prompting victims to take action, such as transferring funds or divulging sensitive information.

While other types of phishing attacks exist, they do not specifically focus on imitating the style of legitimate emails to the same extent. For instance, puddle phishing might refer to various smaller, less traditional phishing methods, and pharming involves redirecting users to fraudulent websites without changing the email's appearance. Spimming, which deals primarily with spam through instant messaging or social media, also lacks the focus on email style that characterizes CEO scams. Thus, the option that best fits the description of imitating legitimate email style is the CEO scam.