FAQ: What Is Computer Virus And Its Types?

In more technical terms, a computer virus is a type of malicious code or program written to alter the way a computer operates and is designed to spread from one computer to another. A virus operates by inserting or attaching itself to a legitimate program or document that supports macros in order to execute its code.

What is computer virus and their types?

Web Scripting Virus: This type of computer virus will exploit the web browser and web page codes. Resident Virus: It is a general term for any virus residing in the computer memory. Polymorphic Virus: This virus changes its code every time a file infected with a virus is executed.

What are the 4 types of computer viruses?

Common Types of Computer Viruses

  • Multipartite Virus. This virus infects the entire system – multipartite viruses spread by performing unauthorized actions on your operating system, folders, and programs.
  • Direct Action.
  • Browser Hijacker.
  • Overwrite Virus.
  • Web Scripting Virus.
  • File Infector.
  • Network Virus.
  • Boot Sector Virus.
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What is computer virus explain?

Definition: A computer virus is a malicious software program loaded onto a user’s computer without the user’s knowledge and performs malicious actions. Description: The term ‘computer virus’ was first formally defined by Fred Cohen in 1983. Computer viruses never occur naturally.

What are the main types of computer virus?

Common Types Of Computer Viruses

  • File-infecting Virus. A virus that attached itself to an executable program.
  • Macro Virus. This type of virus is commonly found in programs such as Microsoft Word or Excel.
  • Browser Hijacker.
  • Web Scripting Virus.
  • Boot Sector Virus.
  • Polymorphic Virus.
  • Resident Virus.
  • Multipartite Virus.

What are the 10 types of computer viruses?

Could A Computer Become Infected With A Virus By Means Of An Email?

  • Boot Sector Virus. Topping our list is the boot sector virus.
  • Overwrite Virus.
  • Direct Action Virus.
  • Web Scripting Virus.
  • Polymorphic Virus.
  • Directory Virus.
  • Macro Virus.
  • Memory Resident Virus.

What is a computer virus name its types Class 7?

The main types of computer virus are as follows: Boot Sector Virus. Direct Action Virus. Multipartite Virus.

What is types of virus?

Various types of viruses:

  • Macro Virus: Unlike most viruses which are written in a low-level language(like C or assembly language), these are written in a high-level language like Visual Basic.
  • Source code Virus:
  • Polymorphic Virus:
  • Encrypted Virus:
  • Stealth Virus:
  • Tunneling Virus:
  • Multipartite Virus:
  • Armored Virus:

What are the five types of computer virus?

5 types of computer virus

  • With security threats in the form of computer malware and viruses increasing over the past few years, it is important to understand the types of computer viruses and how to avoid becoming a victim of a cyber attack.
  • 1- Ransomware.
  • 2- Virus.
  • 3- Adware.
  • 4- Spyware.
  • 5- Trojan Horse.
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What is computer virus example?

Examples of computer viruses Trojans – As in the myth, a Trojan is a virus that hides within a legitimate-seeming program to spread itself across networks or devices. Ransomware – Ransomware is a type of malware that encrypts a user’s files and demands a ransom for its return.

What is first computer virus?

The first computer virus, called “Creeper system”, was an experimental self-replicating virus released in 1971. It was filling up the hard drive until a computer could not operate any further. This virus was created by BBN technologies in the US. The first computer virus for MS-DOS was “Brain” and was released in 1986.

What is virus in simple words?

A virus is a parasite that can only be seen under a microscope and can infect living organisms and cause disease. It can make copies of itself inside another organism’s cells. Viruses consist of nucleic acid and a protein coat. Usually the nucleic acid is RNA; sometimes it is DNA.

How many computer viruses are there?

By number, there are well over 100,000 known computer viruses. Only a small percentage of this total number account for those viruses found in the wild, however. Most exist only in collections.

What is the most common type of computer virus?

1. Macro Viruses. One of the most common types of computer viruses are macro viruses which are designed to attach themselves to files that support shortcut codes that can be executed with a keystroke, such as Word documents and Excel spreadsheets.

How many types of computer virus are there Mcq?

Explanation: There are a total of 10 types of virus. These are categorized based on their working and characteristics. These are System or Boot Sector Virus, Direct Action Virus, Resident Virus, Multipartite Virus, Polymorphic Virus, Overwrite Virus, Space-filler Virus, File infectors, Macro Virus, Rootkit virus.

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What is the full form of virus?

The full meaning of the virus is Vital Information Resources Under Siege.

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