Types of computer viruses and definition of each type

Types of computer viruses and definition of each type

Types of computer viruses and definition of each type

In today’s world computers are the most used things, but there are many viruses that affect computers and make it slow and infected.

Today in this article I will show you the types of computer viruses and definition of each type. A computer virus is a type of malware that is written in your computers without your knowledge or permission.

A computer virus has the capacity to replicate or duplicate itself and it will keep spreading and killing your computers. There are different types of viruses and their effects are also different.

Types of computer viruses and definition of each type

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  • Resident viruses
  • Overwrite viruses
  • Direct action viruses
  • File infectors
  • Boot viruses
  • Directory viruses
  • Micro virus
  • E-mail virus
  • Ransomware
  • Browser highjacks

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Here is the definition of each type

  • Resident viruses:- A resident virus is a computer virus that stores itself within the computer memory and allowing it to infect other files also even when the originally infected program has been terminated.
  • Overwrite virus:-

    It is a malicious program which effectively destroys the original program code after infection typically by overwriting data in the system’s memory.

  • Direct action virus:- A direct virus is a virus that attacks or starts to work immediately. The primary intention of this virus is to replicate and to spread infection whenever the code is executed.
  • File infectors:-

    It is one of the most common types of virus. It is a type of malware that infects executable files and make them unusable. Thus virus inserts infected code into an executable file and permanently damaged that file. This type of virus can infect a number of operating systems like Windows, Unix, and Macintosh.

  • Boot viruses:-

    It is a type of virus that infects the boot sector or floppy disks. The infected code runs when the system is booted from an infected disk. The most common way of spreading this virus is using physical media.

  • Directory viruses:-

    As the name indicates, a directory virus infects the directory of your computers. A directory is simply a large file or folder that contains information of other files in it. A directory virus inserts malicious code into a cluster and marks it as allocated in the FAT which prevents it from being allocated in the future.

  • Micro virus:-

    The micro virus basically infects popular computer applications used for everyday computing purpose. It is a type of mini-program that can easily affect a particular computer system. It runs inside another program which has the ability to spread in a swift manner.

  • E-mail virus:-

    E-mail virus is a virus that is attached to or sent with e-mail communications. There are many different types of e-mail viruses that work in different ways and there also are a variety of methods used to counteract such challenging cyberattacks.

  • Ransomware:-

    Ransomware is a type of malware in which the data present on the victim’s computer is locked typically by encryption and money is demanded before the ransomed data is decrypted or access returned to the victim. This malicious is spread through malicious email attachments, infected software, infected external storage devices, and compromised websites.

  • Browser highjack:-

    It is also a malware program that changes the browser settings without taking permission from the user. It also called a browser redirect virus because it redirects the browser to another website(usually malicious website).

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Antivirus for pc full version

Now, in order to prevent your computer from viruses, there are many antiviruses available in the markets.

Here is the antivirus software list that you can install in your computers and make it virus free.

  • Comodo Free Antivirus
  • Avira Free Antivirus
    • Avast Free Antivirus
  • AVG Free Antivirus
  • Kaspersky Lab Internet Security
  • Bitdefender Antivirus Free Edition
  • Sophos Home Free Antivirus
  • Microsoft Windows Defender

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You can also buy antiviruses online and make your computers or laptops secure.

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Keep the folders of your computer locked with the help of BitLocker because if you can’t do this anyone can access your folders and steal your data.

10 steps to improve your online security and stop hackers.

1. You have to update your computer whenever it requires.

2. Install firewall.

3. Encrypt your data.

4. Make a backup of your data.

5. Set a strong password.

6. Lock social media accounts.

7. Social security.

8. Shred documents.

9. Use a VPN.

10. Use antivirus.

Conclusion

Sometimes we download unknown files from the browser and it is also a major factor of antivirus.

So always download software from a well-known source. Filehippo is my favorite website from where I download all the software for windows, mac.

Also, don’t give email and passwords on any untrusted website, hackers can hack your email and misuse it.

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Pankaj Verma

I am a person who loves gadgets, smartphones and i also love to write about smartphones and other stuff. I am running this website since 2018. You can also follow me on instagram, facebook and twitter.

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