Which of the following is NOT a virus category?
A) Worm
B) Logic bomb
C) Macro
D) Pharming
The Correct Answer and Explanation is:
The correct answer is A) Worm.
Here’s why:
In the context of computer security, viruses, and malware, the terms “worm,” “logic bomb,” “macro,” and “pharming” all refer to different types of malicious software or cyber attacks. However, only one of these terms represents a type of virus in the traditional sense, while the others represent different forms of malware or attacks.
Worm
A worm is not considered a type of virus. While both worms and viruses are forms of malicious software, worms are self-replicating programs that spread independently across networks. They do not need to attach themselves to a host file to propagate, unlike viruses, which require a host file or program to spread. Worms often exploit vulnerabilities in network systems or software to spread, and they can cause widespread damage by consuming bandwidth, slowing down networks, or corrupting files. Since worms do not rely on a host file or executable program like viruses do, they are classified separately.
Logic Bomb
A logic bomb is a type of malicious code or malware that is triggered by a specific event or condition, such as a certain date or the deletion of a file. Logic bombs can be embedded within a program or file and are activated when predefined conditions are met. While logic bombs may be used in conjunction with viruses or other forms of malware, they are not considered viruses themselves.
Macro
A macro virus is a type of virus that is written in a macro language (like the one used in Microsoft Office applications). These viruses target macro scripts in documents, often spreading through email attachments or infected documents. Once a document is opened, the macro virus executes, potentially damaging files or compromising systems.
Pharming
Pharming is a type of cyber attack in which malicious actors redirect website traffic to fraudulent sites without the user’s knowledge, typically by exploiting vulnerabilities in DNS (Domain Name System) servers. While pharming is a form of cyber attack, it is not classified as a virus.
Thus, a worm is a type of malware but not categorized as a virus, making it the correct answer.