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Uncover the World of Computer Viruses

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Questions and Answers

Which of the following best describes a computer virus?

A program that runs independently and actively carries out attacks

A type of software that modifies other computer programs

A program that requires a host program to run

A program that replicates itself by modifying other computer programs (correct)

What is the main difference between a computer virus and a computer worm?

A virus modifies other computer programs, while a worm replicates itself

A virus is a type of malware, while a worm is not

A virus can actively carry out attacks, while a worm cannot

A virus requires a host program, while a worm does not (correct)

How do viruses evade antivirus software?

By replicating themselves into multiple files

By exploiting security vulnerabilities

By using complex anti-detection/stealth strategies (correct)

By using social engineering deceptions

What is the metaphor derived from in the term 'computer virus'?

<p>Biological viruses</p> Signup and view all the answers

What do virus writers use to initially infect systems and spread the virus?

<p>Detailed knowledge of security vulnerabilities</p> Signup and view all the answers

Study Notes

Computer Viruses

A computer virus is a piece of code that attaches itself to a program or file, replicates itself, and spreads to other computers, causing harm or degradation to the system.
The main difference between a computer virus and a computer worm is that a virus requires a host program to replicate, whereas a worm can replicate itself without a host.

Evasion Techniques

Viruses evade antivirus software by using techniques such as code mutation, stealth, and polymorphism to evade detection.

Origins of the Term "Computer Virus"

The term "computer virus" is derived from the biological concept of a virus, where a small organism replicates itself and spreads to other organisms, causing harm.

Infection and Spread

Virus writers use vectors such as email attachments, infected software downloads, and infected websites to initially infect systems and spread the virus.

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Description

Test your knowledge about computer viruses and their impact on computer systems. Learn about their replication methods, how they infect host programs, and the metaphorical connection to biological viruses.