What is Computer Virus and How to Protect From Virus

Check out here what is Computer virus and how to protect your Computer from virus.

Are you interested to know what is Computer Virus ? Everyone knows how to use a computer and those who use a computer must have heard the name of the virus.

What is Computer virus , This is is a well-known name in the Internet world. It is also a very scary name because it is very harmful to your computer and other electronic devices. This means that once you enter the system, you can lose your data.

Many people may have heard the name of the what is computer virus but they will not know what the virus can do on your computer.

So today in this article I am going to tell you about what is Computer virus and how to kill the computer virus. Hopefully, you will get to know a lot of information by reading this article.

What is Computer Virus

what is computer virus
what is Computer virus

A computer virus is a small software program designed to delete your computer’s operation and computer data.

Computer viruses cannot reproduce and spread without programming as a file or document.

A computer virus is a type of code or malicious program designed to modify the activities of a computer and spread it from one computer to another.

Virus manages to insert itself into a legitimate program or document that supports macros to execute its code.

In this process, a virus has the potential to create unexpected or harmful effects, such as damaging or destroying data and damaging system software.

Without knowing it, computer viruses can destroy the system in such a way that we are not interested in solving it. The computer runs on many software programs, without which the computer cannot function.

History of Computer Viruses (What is Computer Virus)

Robert Thomas, the first engineer to develop the first computer virus while working at BBN Technologies in 1971.

This first virus was called the “Creeper” virus, and it was an experimental program that Thomas himself made to infect the original frames of ARPANET.

After the virus infected the system, it appeared on the following message screen: “I am the vine: catch me if you can.”

The first wild computer virus to be tracked for the first time was “Elk Cloner”. This moose clone was previously transmitted to Apple II operating systems via floppy disks. Richard Scranton developed the virus in 1982 when he was a teenager.

Suppose computer viruses were designed to prank around, but it seems that if a malicious program is installed in the computer memory, it can allow the user to run the system and do many of those things.

You can stop longer and you will have no control over these malicious programs.

At first, Fred Cohen gave the name of malicious programs as “computer viruses” in 1983.

The name was published when he wrote the names of these programs in an academic research paper titled “Computer Viruses – Theory and Experiments” where he wrote complete information about these malicious programs, how it works, what it can do, etc.

What does A Computer Virus Effect?

A computer virus can infect or delete data on a computer. Computer viruses infect other computers through email attachments and infect their computers.

The virus slows down your computer. It damages your files and programs.

Once a virus successfully links to a program, file, or document, the situation will remain clear until the computer or device executes its code.

This means that a virus can remain inactive on your computer without showing significant signs or symptoms. However, once the virus infects your computer, it can infect other computers on the same network.

Computer virus can steal passwords or data, logging keystrokes, corrupting files, spamming your email contacts, or even more.

This includes deleting data or causing permanent damage to your hard disk. Worst of all, always remain some viruses have been created with only financial gain.

How do Computer Viruses Extend?

The virus can be spread through email and text message attachments, Internet file downloads, and links to social media links. 

Downloading the third party app infects your computer devices, tablets, and mobile viruses. Viruses can disguise socially distributed content, such as greeting cards or attachments to funny audio, video, and image files.

To avoid the virus, it is the most important caution when you browsing the internet (especially 18+ sites), downloading any files, opening links.

Also Read: What is Antivirus Software and How Antivirus Works

What are The Symptoms of Computer Virus?

When Computer virus attacks on any device, there are many different types of signs that come out. Below are some symptoms…

Unknown programs will start up when opening on your computer: You may be aware of unfamiliar programs when you start the computer. Or you can check the list of running applications on the computer.

Frequent pop-up windows: It can encourage you to visit their sites to download their files like antivirus or any other software.

Slow performance: If suddenly your computer or any other device works slowly, then you have to ware.

Frequent crashes: It is the most vital thing. Because the virus can damage your Computer Hard Disk. This may cause your device to crash.

If you see such warnings on your system, you should know that your system may be infected with a virus. So, download the best antivirus software soon and scan.

What is Malware in Computer

Malware’s full form is malicious software. It is a software program that gives access to computers. Malware software means bad software that is not good at all, and once it enters your system, it can destroy your system.

Malware is the name of a virus that slowly begins to delete data from your system.

Where does Malware come into our computer?

what is computer virus and its types
what are Computer virus and its types

Malware can come from many places in our system and the most used source, which is a common source today, is the Internet.

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On the Internet, we receive information every day. If we go to a malicious site to download the same information or pirated software, games, and movies, online malware reaches our computer from there.

This is how online malware reaches our computer, now we know how offline malware reaches our computer.

We all use pen drives, CDs, DVDs on our computers. When we connect USB flash drives and CDs from our place to get data from our computer, the malware reaches our computer from all these things and can destroy the data from our computer.

What are the Types of Malware?

There are three types of malware: viruses, worms, and Trojan horses. These three are different, their work is also different. These three steal your computer in different ways. Let us know about these three and what they do.

What is a virus? (what is computer virus)

The virus can infect files and software on your computer. Suppose you have a Word document on your system that has been infected by a virus, then it will delete the data in your document and you will not get any information from this document.

Or it could be that the virus has completely infected your word processing software. In that case, if you copy or share a malicious file, the virus spreads to other computers and corrupts your system.

What is Computer Virus and its Types

A computer virus is a type of malware that, if it enters the memory of a computer, can automatically count and modify programs and applications.

Also Read: What Is A Supercomputer And Fastest Supercomputer In World

These malicious codes infect computers if you keep a copy of them. I will give you information about the types of computer viruses that occur here.

Boot Sector Virus

When you open or boot your computer, then this virus controls your computer. This computer virus comes from infected USB or Pendrive.

This type of virus infects the master boot sector and is very difficult to remove and often requires formatting the system to remove it. These are spread primarily by removable media.

Direct Action Virus

This Computer virus comes from infected files on your computer.

Also called a non-resident virus, it hides in the computer’s memory once it’s installed. It is attached to certain types of infected files. They do not perform user experiences and system functions.

Resident Virus

The resident virus can reach on our computer when you load an operating system.

Like direct-action viruses, resident viruses also install on computers. Apart from this, his identification is also a smile.

Multiparty Virus

This type of virus can infect the system in multiple ways. These infect both the boot sector and the executable file at the same time.

Polymorphic Virus

It changes the programming codes on your computer.

This type of virus detection is a very interesting topic for traditional antivirus programs, as these viruses often change their signature type every time they replicate.

Overwrite Virus

This type of virus deletes all the files that they infect itself. To remove this virus from the system, the user must delete all the infected files, resulting in data loss.

It is a very happy thing to recognize overwrite viruses as they are spread through emails.

File infectors Virus

When a particular program loads, the virus loads automatically. These viruses reach users’ computers with emails.

Macro viruses

This virus comes from an infected document.

As the name suggests, these macro viruses only target macro language commands in some applications, such as Microsoft Word.

These macro viruses are designed in such a way that they easily integrate their malicious code into the original macro sequences.

Polymorphic Viruses

This type of virus is often used by cybercriminals. It is a type of malware that can easily modify its underlying code without changing basic functions or features.

Also Read: What is the Operating System (OS) in Computer

It does not weaken it in favor of any anti-malware. Every time an antimalware detects it, it changes itself, making it a lot of fun to catch.

Resident virus

This virus implants itself in the memory of the computer. No original virus program is needed to infect any file or program. Even if we remove the original virus, a version of it is stored in memory, which is activated.

This happens after the computer’s operating system loads some applications or functions. Since it is hidden in system RAM, it often cannot detect any antivirus or antimalware.

Rootkit virus

This rootkit virus is a type of malware that secretly installs an invalid rootkit on an infected system. This allows you to open a door for attackers to gain complete control over your system.

This allows the attacker to fundamentally modify or disable any program or function. This rootkit virus can easily bypass antivirus software. These require a rootkit scanner to capture.

Browser Hijacker virus

These types of viruses come from when you are using internet browsing. I am sure that you have seen when you visit any pron sites, your sites are redirected to another website.

Boot-record Infectors Viruses

This boot record infects the executable code found on certain disk systems. As the name implies, they further infect the USB stick and the DOS boot sector.

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These boot viruses are less common today because the current system is not overly dependent on physical storage media.

What is Worms? (what is computer virus)

Worms are like viruses, but they multiply on their own and try to spread as much as possible. This means that if you have worms on your system, they start to make lots of copies of different files, which slows down the system.

If we copy and share the same files with another computer, the worms will slow down that computer by going there very slowly and copying many files.

What is a Trojan Horse? (what is computer virus)

Trojan Horse is a very dangerous malware. This malware hides your identity on your computer.

For example, if you are using the Internet and have visited a site, there is an additional feature like “click here to win a smartphone” and if you click on it, Trojan malware only reaches your computer through it. And you won’t know and your system will completely ruin it.

These are available on the Internet in the form of lots of software, you may think it is the actual software, but in reality, it remains as a Trojan that hides inside that software and once it reaches your computer then your computer will be on to start slowly. With it, it opens a door for a variety of viruses and worms to enter your computer.

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How to Protect Your Computer from Computer Virus

Here I am giving you some such tips that will protect from Computer virus.

Also Read: What Is Kali Linux And How To Download?

You Need;

1. Always install a good antivirus on your system and keep it updated from time to time.

2. Do not download anything from unauthorized websites such as MP3s, movies, software, etc.

3. Scan all downloaded items correctly. Because they are more likely to contract the virus.

4. Use removable media such as a pen drive, only after scanning the disks.

You Don’t Need;

1. Never open an email attachment unless you know the sender.

2. Do not try to open unnecessary executable files, documents, spreadsheets without scanning.

3. Never download any documents or executable software from untrusted websites.

4. Ads that appeal to you, click here and win the lottery, then never click on that pair. We get the same greed in our emails, so you shouldn’t open malware anymore as you have more chances of malware.

5. Never click on bad links, for example, ‘click here to win a smartphone”, because it is a Trojan malware virus.

Conclusion about What is Computer Virus

I hope you like this article about what is Computer virus. And if you have any suggestions on what is Computer virus you can comment us.

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Frequently Asked Question (FAQ)

What is virus?

A virus is a type of malware that, if it enters the memory of a computer, can automatically count and modify programs and applications.

What is Computer virus?

A computer virus is a type of code or malicious program designed to modify the activities of a computer and spread it from one computer to another. A computer virus is a small software program designed to delete your computer’s operation and computer data.

Who invented virus?

Robert Thomas, the first engineer to develop the first computer virus while working at BBN Technologies in 1971. Richard Scranton developed the virus in 1982 when he was a teenager.

How do computer viruses spread?

Downloading the third party app infects your computer devices, tablets, and mobile viruses. Viruses can disguise socially distributed content, such as greeting cards or attachments to funny audio, video, and image files.

What are the symptoms of Computer virus?

1. Unknown programs will start up when opening on your computer.

2. Frequent pop-up windows.

3. Slow performance.

4. Frequent crashes.

5. Files automatically multiplying / duplicating

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