The correct answer is D. All the above.
A worm is a type of malware that can replicate itself and spread from one computer to another without the need for human interaction. A virus is a type of malware that can attach itself to other files and programs and spread when those files or programs are opened or executed. A Trojan horse is a type of malware that disguises itself as a legitimate program in order to trick users into running it. All of these types of malware can harm computer resources by causing data loss, system crashes, and other problems.
Here is a brief explanation of each type of malware:
- A worm is a type of malware that can replicate itself and spread from one computer to another without the need for human interaction. Worms can spread through email attachments, file sharing networks, and even through vulnerabilities in operating systems and software. Once a worm has infected a computer, it can cause a variety of problems, including data loss, system crashes, and even denial-of-service attacks.
- A virus is a type of malware that can attach itself to other files and programs and spread when those files or programs are opened or executed. Viruses can cause a variety of problems, including data loss, system crashes, and even identity theft.
- A Trojan horse is a type of malware that disguises itself as a legitimate program in order to trick users into running it. Once a Trojan horse is installed on a computer, it can steal data, damage files, or even take control of the computer.
It is important to protect your computer from malware by using antivirus software, keeping your operating system and software up to date, and being careful about what files you open and what links you click on.