What is computer virus, 7 types of computer viruses?

What is computer virus, 7 types of computer viruses? post thumbnail image

In this post What is computer virus, 7 types of computer viruses?, we are going to learn everything about virus. We all know about computer. Because the importance of computer in our life has increased so much that we can also call this era as computer age. Because in today’s era it is necessary to have knowledge of computer for a good job.

We all know how to use a computer, but do you know about computer virus, what is a computer virus and what can be its side effects?

Because Virus is very harmful for all of them like Computer, Mobile, Electronic Gadgets. Because once Virus enters your computer, it can cause many damages to your computer system.

Due to the arrival of Computer Virus in your computer, your computer system starts working very slow. Along with this, Computer Virus destroys your computer system and data.

We hope that many computer users will know what is Computer Virus? But some computer users will not know what is computer virus?

So this article can prove to be very beneficial for them. For this you have to read this article completely.

Because today we are going to share in detail all the information related to Computer Virus in this article. Like – What is Computer Virus? What can Computer Virus do? What are the types of Computer Virus? What is the Sign of Virus Infection in Computer System? What are the measures to avoid Computer Virus?

Let us first know what is a computer virus?

You can also read: Use Of Mouse In Computer.

What is computer virus, 7 types of computer viruses?

What is computer virus?

A computer virus is also a kind of software program, which, along with slowing down the performance of your computer, is designed to prevent your computer system software from working and to destroy or damage the computer’s data. has gone.

The full form of Virus is Vital Information Resources Under Siege.

We all know that there are many software programs in the computer and the computer fulfills the tasks given by us through those software programs. Computer cannot do anything without any software program.

This computer virus can enter your computer system from many sides without your permission. And the most important thing is that the user does not even know about it. This virus gradually spreads in your computer. Your computer system also hangs if it is more affected by the virus.

For your information, let me also tell you that Virus is not natural. It is made by hackers. Viruses are also created in the same way as more than one software program is created to make the computer work better, but its purpose is not made to help but to damage the computer.

Type of Computer Virus

Friends, I hope that now you have understood that what is a computer virus? But for better performance and security of the computer, you also need to know that what are the types of computer viruses and how do they get into your computer? And how much and how can these viruses affect your computer? So let us know in detail how many types of computer viruses are there?

There are many types of computer viruses, some of them are prominent which are as follows –

  • Boot Sector Virus
  • File Infector Virus
  • Micro Virus
  • Browser Hijacker Virus
  • Resident Virus
  • Partition Table Virus
  • Direct Action Virus

Boot Sector Virus

A boot sector virus is a computer virus that specifically infects the Master Boot Record (MBR) of the floppy disk or hard disk of the boot sector. These Viruses in the system mainly come through Removable Media.

When your computer gets infected with this virus, then when you turn on your computer, then this virus hinders the operation system to load. When this virus infects your computer, then it is very difficult to remove it from your computer. Mostly the system has to be formatted to remove this virus from the system.

File Infector Virus

The number of systems that get infected by the File Infector virus is the highest. Because a large part of the virus belongs to this category. When a particular program is loaded, this virus is automatically loaded. This virus can come in the user’s computer along with the email. Some File Infector Viruses come attached with Programs File. Like- .COM, EXE. File.

This virus can also be very harmful to your computer system. Because this virus can easily infect the stored files or data in your computer.

Along with starting your computer system programs, this virus can also damage the applications present in your computer. This virus can infect executable files (eg- Sys, ovl, prg, and mnu).

Micro Virus

Microviruses specifically target to infect software and applications that contain microbes.

Micro virus especially damages files like Micro Soft Office i.e. Word, Document, PowerPoint, Spreadsheet. This slows down its performance.

If this micro virus infects these software, then whenever you open this software in your system, then this micro virus automatically starts its actions. Due to which other software or applications also get affected.

Friends, as we all know that computer virus spreads only through software or application. Therefore, this virus can also infect any operating system like- (Windows, Android, macOS, iOS, etc.).

Browser Hijacker

As we all know how much internet is being used nowadays. In today’s era, we like to watch more movies online and like to play online games and open many types of websites. Due to which the risk of virus getting into our device increases.

Some people also do advertisements on the Internet to increase their income. Whenever you enter a URL in the address bar of the browser, browser hijackers do not take you to that website and direct you to another infected website. This is usually done only to increase your income. In this way, when your browser gets infected with this virus, then many types of unwanted advertisements start appearing on your browser.

Direct Action Virus

Direct Action Virus is also called Non-Resident Virus. This virus usually infects files with extension (eg- .COM, EXE) more.

Once this virus enters your computer system, it stays hidden in the memory of your computer.

The special thing about this virus is that these viruses do not come into action until they are opened by clicking.

This virus remains attached to a specific type of file. whom it infects. This virus is also harmful for your system.

Because this virus can also damage your file. However, it is a matter of relief that this virus is not very dangerous, it can also be removed with the help of Antivirus Program. And it does not affect User Experience and System Performance.

Resident Virus

A resident virus is a virus that infects itself by storing itself in the computer’s RAM memory. Resident virus also gets installed on your computer just like direct action virus.

Sometimes these viruses also combine with Antivirus. There are many different types of resident viruses and they work in different ways. In this, some viruses act fast and some act a little slow.

Many problems also arise in computer systems infected with resident viruses. For example, due to infection with this virus, there is a problem in operating your computer system, shot down and copy-pasting any data. Recognizing this virus is also a bit difficult task.

What are the Examples of Computer Virus?

So let us now tell you the name of some computer virus which is very dangerous.

  • SQL Slammer.
  • Nimda
  • Blaster
  • Code Red
  • ILOVEYOU
  • The Morris Worm
  • Creeper
  • Morris Worm.
  • Mydoom.
  • Stuxnet.
  • CryptoLocker.
  • Sasser & Netsky.
  • Anna Kournikova.

All the names of viruses that I have mentioned here are all top names, apart from this, there are many computer viruses and new ones are also created every day.

Effect of Computer Virus

Computer virus can delete or corrupt the data, file, folder, document present in your computer system.

A computer virus impairs the ability of your computer system to function. Viruses can also delete data stored in hard disks of your computer data. Attachment through email can also affect from one computer to another.

What are the Symptoms of a Computer Virus

Friends, we are not only hopeful but have full faith that now what is a computer virus and how many types of computer virus are there? You must have understood this. But just knowing this is not enough for you.

Because it is very important for computer users to know about the symptoms of computer virus for better performance and protection of computer. Because from that symptom you will immediately understand that your computer has been infected with a virus.

So let us tell you about some such symptoms:-

  • Slow performance of your computer system.
  • Any file or folder has to be deleted or corrupted.
  • Internet Internet Speed ​​Slow.
  • Showing of Unexpected Advertisement on the display of your computer system.
  • A new folder or program is automatically installed in the computer.
  • Unnecessary email arrival.
  • Error message or warning alert appears on your screen while using the browser.
  • Some files on their own, programs run automatically.
  • If your device hangs then it means that your computer system may be infected with virus.

If anything like this is happening in your computer system, then understand that your computer system has been infected with virus. And it is also very important to protect your computer system from this. Because these viruses can also delete or destroy the data of your computer system.

Causes of Computer Virus

There are many sources of virus coming in the computer, so let us tell you which can be the sources from which virus comes in a computer or laptop.

  • Connecting one device to another can also transmit viruses.
  • The absence of Antivirus Virus in your computer system.
  • Downloading programs: Programs that contain downloadable files are the most common sources of malware such as freeware, worms, and other executable files.
  • Pirated or cracked software.
  • Bluetooth
  • Internet
  • email attachments
  • online aids
  • Downloading software from malicious sites
  • Open attachments or links from unknown or spoofed emails

Prevention of Computer Virus

You must know that the use of computer has increased so much. Because computers are everywhere. Because a computer can do a lot of work in a very short time.

But sometimes the computer also gets infected with the virus. Due to which the working capacity of the computer decreases. He starts working very slowly. Which causes a lot of trouble. Viruses can also hang your computer.

It is very important for people who use computers to know how to protect their computer system from viruses.

So let us tell you about some ways to avoid the virus today. Which is very important for you. You can keep your computer safe from viruses by following the method I have described.

  • Install a very good antivirus in your computer system and keep updating it from time to time. If you use more internet then you can also use Premium Antivirus.
  • There is also a risk of getting viruses due to excessive internet use. Therefore, avoid using more internet, especially from the use of websites which are not secure.
  • The site which is not popular and registered. Do not visit that website.
  • Stay away from porn website. Because if you want that the virus does not come in your computer, then you should never open the porn website in your computer. Because 90% of porn websites have viruses.
  • Scan the pen drive, disk before using it
  • Keep scanning your computer system from time to time with Antivirus.
  • If you do not have any information about the sender of any email, then do not open it.
  • Do not download anything from Unauthorized Websites. Like- Any Muve, MP3 Software or Application etc.
  • Get the downloaded thing scanned thoroughly. Because the risk of virus in them is very high.

How To Deal with Computer Viruses?

Above you read and know what we should do to avoid getting virus in the computer. How can you protect your computer or laptop from viruses?

But there will definitely be a question in your mind that if the virus has entered the computer, then how can we deal with it, how can we get it out of the computer. So let us tell you some ways by which you will get the answer of these questions.

To remove the virus from the laptop, follow the steps given below.

Step 1: Use a reliable antivirus program.

If you already have antivirus software installed on your computer and it is still infected with virus, then the software you were using is not a good antivirus.

Step 2: Run Antivirus on your computer and scan the system

When the antivirus is installed on your computer, you have to open it and then start the scan process. Click on the Scan button to start the scan.

Step 3: Remove Malware

After the scan is done, you get to see the result where it is told how many viruses are there in the computer, if there is a virus, then after that the option of remove is seen. By clicking on the remove button, you will remove the detected virus from your computer system.

Step 4: Prevent future infections

To prevent viruses from entering the computer in future, you should auto-schedule the scan so that your computer is scanned once or twice a week, in this way you can keep your computer more secure.

Apart from this, after connecting the external device to the computer, scan it first and then open it.

Hope you know everything about computer virus. If you have any question or suggestion related to this article, then tell me by commenting.

If you liked this information given about computer viruses, then share this article with your friends and help them to know too.

You can also visit my Hindi YouTube Channel.

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Avinash Singh

I am Avinash Singh, a software engineer from the profession and have been working in the IT industry since 2009. I live in Barabanki district of Uttar Pradesh in India and completed intermediate in 2001 from Ram Sevak Inter College, a UP Board school. After inter I completed my professional degree (BCA & MCA) from Indira Gandhi National Open University, Delhi in 2008 and along with it I did many certifications to keep my knowledge up to date and the next year I started a software development company E – Vision Technocraft Pvt Ltd.

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