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What are the types of computer viruses?

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What are the types of computer viruses?

The main types of computer virus are as follows:

  • Boot Sector Virus.
  • Direct Action Virus.
  • Multipartite Virus.
  • Polymorphic Virus.
  • Resident Virus.
  • File Infector Virus.

What are the top 3 malware?

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  1. Ransomware. Ransomware is software that uses encryption to disable a target’s access to its data until a ransom is paid.
  2. Fileless Malware.
  3. Spyware.
  4. Adware.
  5. Trojan.
  6. Worms.
  7. Virus.
  8. Rootkits.

What are the 10 types of computer viruses?

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  • 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 the most common computer virus?

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  • CryptoLocker. When it comes to malware, ransomware is the new kid on the block.
  • ILOVEYOU.
  • MyDoom.
  • Storm Worm.
  • Anna Kournikova.
  • Slammer.
  • Stuxnet.

Which is the biggest virus in the world?

Computer viruses cost an estimated $55 billion each year in cleanup and repair costs. The biggest computer virus ever is the Mydoom virus, which did an estimated $38 billion in damages in 2004. Other notables are the Sobig worm at $30 billion and the Klez worm at $19.8 billion.

Which is the worst computer virus in history?

The worst computer virus outbreak in history, Mydoom caused estimated damage of $38 billion in 2004, but its inflation-adjusted cost is actually $52.2 billion. Also known as Novarg, this malware is technically a “worm,” spread by mass emailing.

What is the definition of a computer virus?

Computer virus definition. A computer virus is a type of malware that attaches to another program (like a document), which can replicate and spread after a person first runs it on their system. For instance, you could receive an email with a malicious attachment, open the file unknowingly, and then the computer virus runs on your computer.

What was the name of the first virus to hit the Internet?

But it’s actually a computer virus known as Nimda (admin spelled backwards) that hit the internet back in 2001. Within an hour after its release, Nimda reached the top spot of all reported attacks. No wonder, since the worm used five different transmission routes.