What characterizes a virus in terms of malicious software?

What characterizes a virus in terms of malicious software?

• A. It monitors user activities
• B. It replicates itself to other programs
• C. It encrypts files for ransom
• D. It primarily targets network devices

Answer: (B)

A virus is characterized by its ability to replicate itself and spread to other programs or files. Once it infects a host program, it can attach itself to executable files and can execute malicious payloads when the infected program runs. This self-replication is a key feature that distinguishes viruses from other types of malicious software, such as trojans or ransomware. While other types of malware might perform different functions, they do not replicate in the way a virus does. For example, monitoring user activities typically pertains to spyware, while encrypting files for ransom describes ransomware. The option that highlights targeting network devices refers to threats such as worms or specific types of malware designed to exploit vulnerabilities in network equipment, which does not apply to the definition of a virus. Therefore, the ability to replicate itself to other programs is the defining feature of a virus.

A virus is characterized by its ability to replicate itself and spread to other programs or files. Once it infects a host program, it can attach itself to executable files and can execute malicious payloads when the infected program runs. This self-replication is a key feature that distinguishes viruses from other types of malicious software, such as trojans or ransomware.

While other types of malware might perform different functions, they do not replicate in the way a virus does. For example, monitoring user activities typically pertains to spyware, while encrypting files for ransom describes ransomware. The option that highlights targeting network devices refers to threats such as worms or specific types of malware designed to exploit vulnerabilities in network equipment, which does not apply to the definition of a virus. Therefore, the ability to replicate itself to other programs is the defining feature of a virus.