Man-in-the-middle attacks are not a type of phishing attack. Phishing attacks are attempts to trick users into revealing confidential information, such as passwords or credit card numbers, by impersonating a legitimate entity. Man-in-the-middle attacks are eavesdropping attacks in which the attacker intercepts and modifies communication between two parties without their knowledge.

The other answer choices are all types of phishing attacks:

- Whaling is a type of spear phishing that targets high-profile individuals, such as CEOs and government officials.
- Smishing is a type of phishing attack that is delivered via SMS text message.
- Vishing is a type of phishing attack that is delivered via voice call.