Which category includes Dos Attacks?

Virus attacks are a type of malware that self-replicate and spread, which is distinct from the resource exhaustion or disruption goals of a DoS attack.

Trojan attacks involve deceptive malware to gain unauthorized access or perform malicious actions, rather than overwhelming a system for service denial.

Flood attacks, such as SYN floods or UDP floods, are a primary technique used in Denial-of-Service (DoS) attacks to overwhelm a target's network or system resources, rendering it inaccessible to legitimate users.

Phishing attacks are social engineering attempts to trick users into revealing sensitive information, not a direct method of disrupting service availability through network or system overload.