What kind of attack did Kasen perform against the company's web server that involved flooding it with traffic?

A Denial-of-Service (DoS) attack is a type of cyber attack where an attacker overwhelms a target, such as a web server, with an excessive amount of traffic. The main goal of a DoS attack is to disrupt the normal functioning of the service, making it unavailable to legitimate users. In this scenario, Kasen's action of flooding the company's web server with traffic fits perfectly with the characteristics of a Denial-of-Service attack, as it directly seeks to incapacitate the server by consuming its resources.

By generating enough traffic, the attacker can make the web server unresponsive, effectively denying access for users attempting to reach the site. This is often accomplished by using various tools that automate the process of sending requests at a rate that exceeds what the server can handle, leading to service disruption.

The other attack types mentioned are distinct and do not involve flooding a server with traffic. A Brute-Force attack focuses on cracking passwords by trying numerous combinations, while Social Engineering and Phishing attacks aim to manipulate individuals into revealing sensitive information or credentials, rather than directly attacking server resources.