Final answer:
A Spear Phishing Attack is a real-time, targeted attempt to steal sensitive information by impersonating a trusted entity in an electronic communication.
Step-by-step explanation:
The type of attack that occurs in real-time and is often conducted against a specific target is known as a c) Spear Phishing Attack. Unlike a broad, untargeted phishing attack, spear phishing is a sophisticated and targeted attempt to steal sensitive information, such as account credentials or financial information, from a specific victim, often by masquerading as a trusted entity in an electronic communication. These targeted attacks can involve real-time efforts, such as sending messages when the victim is likely to be online and responding quickly to any replies to maintain the illusion of a legitimate interaction.