What is a Virus Full Form in a Computer?

What exactly is a computer virus? This question has been asked by many, but not many people know the answer, or at least the details of the answer. For example, do you know what goes into making up a computer virus? You may have heard that they are made of code, but do you know what that code contains and does? This article will get into the specifics of what goes into making up a computer virus, and show you just how dangerous they can be.

What is a Virus?

A computer virus is a malware that modifies and can propagate itself to infect other computers without the user’s knowledge.

The full form of VIRUS is Vital Information Resources Under Seize.

A program or code that spreads from one computer to another. It’s not just something out of science fiction; it’s real, happening on your computer right now as you read this sentence! Infected computers are part of what are called botnets, which can be controlled remotely for malicious purposes like sending spam or participating in denial-of-service attacks on websites.

Many viruses are contracted by visiting an infected website; others spread through e-mail attachments disguised as normal files, but containing executable files that install programs onto your machine if you try to open them. Other viruses are embedded into software downloads so that they automatically run when you install the software.

No matter how they get there, once a virus has been installed on your computer, it will run whenever Windows starts up or whenever you log into Windows—even when you don’t want it to!

Viruses are dangerous because they’re designed to replicate themselves and alter your system settings so that they can take over control of your PC. Some even steal information stored on your hard drives such as passwords and credit card numbers.

Types of Computer Viruses

Viruses come in all shapes and sizes and aren’t always as destructive as people may think. There are four main types of viruses:

  • Resident Virus
  • Multipartite Virus
  • Direct Action
  • Browser Hijacker

Each type attacks in different ways and can be disruptive to your computer or downright dangerous if you share files with other users.

For example, Resident Viruses reside in your system after infection. A Resident Virus will install an autorun file onto your system that automatically launches every time you start up your computer.

Multipartite Viruses are usually smaller viruses but carry copies of more powerful viruses within them; they are spread like any normal virus but become deadly when certain pre-determined conditions are met by your computer.

  • Resident Virus
  • Multipartite Virus
  • Direct Action
  • Browser Hijacker
  • Overwrite Virus
  • Web Scripting Virus
  • File Infector
  • Network Virus
  • Boot Sector Virus
  • Macro Virus
  • Polymorphic Virus
  • Macro Virus
  • Spacefiller Virus

What is a Computer Worm

Computer worms are malware programs that try to infect computer networks. Computer worms spread themselves by exploiting security vulnerabilities in operating systems and software.

The first known computer worm was released in 1988 and named Robert because it was programmed to replicate itself after consuming all available disk space on its host machine.

By design, Robert never replicated more than once every 998th time it activated itself; therefore, no matter how busy your computer was, it would only infect another computer every 998 times that cycle completed.

To avoid being detected and removed from infected computers, Robert used encryption to hide its messages from network administrators.

Due to such unique characteristics of Robert, anti-virus software vendors were unable to completely remove it for a year after its release.

Examples of Computer Virus

There are three types of computer viruses, and each type has a different goal or mission. Types of viruses include:

  • Malware: Malware consists of software designed to attach itself to your computer, essentially stealing information like passwords, credit card numbers, or financial documents. Often disguised as free games or pornography, malware is usually transmitted through websites (sometimes by email) and/or disks/floppies.
  • Viruses: More accurately known as worms, viruses travel from computer to computer using unprotected Internet connections.

Although viruses come in all shapes and sizes, most often they are spread via an infected floppy disk or infected website link.

How can you get Rid of Viruses?

Depending on how advanced your knowledge of computers and technology is will determine how you can get rid of viruses. But it all starts with education. Find out as much information about computer and internet safety before attempting to remove viruses from your own computer, or those around you.

Learn what antivirus software to use and even which programs are known for spreading viruses, worms, and Trojans. Make sure that if you have an internet connection that it is protected by a firewall so only authorized users can access your network (this way any unauthorized attacks can be limited). While these tips may seem obvious they often aren’t used.

Tips to Avoid Viruses

  • Install antivirus software on your computer and always keep it up to date
  • Avoid downloading pirated software, counterfeit software, or any other software that might contain viruses.
  • Don’t click on links or open attachments in emails from unknown senders.
  • Regularly back up your important files to an external hard drive, so if you do get infected with a virus, it won’t wipe out all of your files (you can still recover most data without restoring from backup).

If you don’t have an external hard drive or online backup account yet, now would be a good time to get one. They’re really not that expensive anymore!

How do Viruses Spread?

You may not realize it, but computers can spread viruses just like humans do. The difference is that, unlike human beings, computers don’t have to talk to each other; they can connect across continents through the Internet.

So how do viruses travel from one computer to another and how do you keep them out of your own computer?

Here are some suggestions-

  • Keep your software up-to-date: This is one of the best ways to protect yourself against most viruses.
  • Most antivirus programs include an automatic update feature so you should make sure yours does too.

For example, if Microsoft releases an update for Windows, your antivirus program will be able to download and install it automatically in order to protect itself against any new security threats.

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Why do we need Antivirus Software?

The worst part about computer viruses is that they can be used to hack into sensitive data and hold it for ransom or perform other harmful tasks on your system.

This can cost companies tons of money in terms of lost data, and additional security, not to mention reputational damage.

They’re also easy for hackers to create and spread; which means even if you take all possible precautions against them now, they could still infect your system at any time.

And with everyone increasingly dependent on computers and mobile devices these days—not to mention cloud storage—your personal information (including credit card numbers) could be vulnerable too.

Anti-Virus Software vs Anti-Malware Software

The first thing you should know about anti-virus software and anti-malware software is that they are different. Antivirus software only works on your computer.

Anti-malware, on the other hand, protects your entire system — including any data that’s on it. Some of these programs can run in conjunction with antivirus software, but many users now prefer anti-malware programs over anti-virus products for one simple reason: They work better.

There’s one downside to an anti-malware program: It has to be able to connect to a server in order to do its job.

Antivirus software Reviews

Making sure your computer has antivirus software installed is one of the easiest ways to protect it from viruses. There are plenty of options out there, but not all antivirus software products are created equal.

If you’re using Windows or Mac, be sure to research different antivirus programs before settling on one to protect your computer and data.

Remember that free doesn’t necessarily mean great—so try and find something that’s cost-effective while still giving you great protection against attacks.

Also, be sure to do some additional research into whether or not an antivirus product is compatible with your operating system before deciding on one. The last thing you want to do is install malware onto your computer when trying to fix it!

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This is Amit Kumar Giri in Short Amit KG, Owner of basiccomputerknowledge.in site, and a part young part-time blogger, computer trainer.  With basiccomputerknowledge.in, you can learn everything about computers in a simple and straightforward manner. We have content written by computer experts to help you achieve success with your computer usage. We also offer online courses that will teach you how to use computers effectively and efficiently. If you're looking for help learning how to use computers or want to improve your skills, visit us at www.basiccomputerknowledge.in today!

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