Computer Viruses What are Computer Viruses? How Do Computer Virus Work? How to Prevent Computer Virus?

Computer Viruses

In today's time, the computer is used in large quantity and if you also use a computer, you must have heard the name of the virus, this name is very popular in the internet world.


Let me tell you a-



Once upon a time, there was a small town in which some innocent people lived where everyone was healthy and prosperous. One day a mischievous magician who was also a thief was passing through that town.


Well, the thief saw an opportunity, so he planned to trick the people there. But a bad plan always comes with accountable risks. What if, get caught. So he planned to rob them in a phased manner.


First, he wanted to get information about the people who lived there. So he offered everyone that he would do magic, and those who came would get free wall clocks.


Well, the offer was irresistible. Everyone wanted a free watch. A huge crowd gathered there and they grabbed the clock at the end of the demonstration. Everyone was happy, but that clock was no ordinary watch. It had a spy camera fitted with a microphone.


Now that thief can spy on anyone with every little detail. Everyone was unaware that they were spying on him. On the other hand, now the thief can see and hear everything that is happening inside their house.


Now he spied on everyone. But the next plan was to rob them. The question was how? He couldn't go straight to their house, so he came up with another plan.


He was a magician who had a great interest in history. He remembered how a city was caught by the Trojan Horse. If you guys can't remember the incident of watching the Troy movie (Where a horse made of woods was placed outside the city, and people bring that horse inside the city, they thought god has sent that horse for the victory).


The thief did the same. He kept good breed dogs (German Shepherd, Labrador, Pug, Bulldog, etc.) outside their houses. Once again everyone was happy to see a good breed dog outside his house. They bring those dogs to their homes.


But, those dogs were highly trainable and efficient. They were cute and over time those dogs gained privilege in their home. And in the night when everyone was sleeping, these dogs were allowing the magician to enter his house through the back door.


Now the magician could do whatever he wanted. He steals everything from their house. He had complete information about every family. He could access everything under their nose without being told.


Many non-technical people with no computer science background will find this story quite entertaining. But remember the clock and the dogs, these are viruses.


What are Computer Viruses?

A computer virus is a piece of malware specifically designed to cause malicious damage to your computer, system, or network. These types of programs and tools are usually designed by hackers or security experts to damage these systems and perform other roles. Virus stands for Vital Information Resources Under Siege.


How Do Computer Virus Work?

In the most general sense, computer viruses are simply self-replicating programs. It's not too hard to imagine a computer program that makes copies of itself.


Different viruses spread in different ways depending on where they keep their copies:


  • Someplace their copies inside executable program files and are thus called file infectors
  • Someplace their copies in the boot sector of a hard disk or floppy disk and are thus called boot sector infectors
  •  Some keep their copies in Microsoft Office documents. These are called macro viruses because they use the ability of components of Microsoft Office (usually Word, Excel, or PowerPoint) to run macro programs found in Office documents.
  • Some exist as standalone programs and rather than placing their copies inside other programs they place their copies on shared or sharable resources like shared folders, removable drives, email, etc. These are more colloquially called insects.


How to Prevent Computer Virus?


1. Use Strong Passwords. Most people use common passwords such as 12345, password, 123456789, etc.

2. Use antivirus software.

3. Install a popup blocker.

4. Beware of email phishing scams as 32% of security breaches are reported to be triggered by phishing attacks.  

5. Educate your family and staff. Most cyber-attacks happen through innocent people. This could be your family member, a child, or an employee who is not aware of smart internet practices.

6. Avoid questionable websites.

7. Keep your antivirus up to date.

8. Think before you click any link.

9. Don’t use open Wi-Fi. When you are in the local coffee shop or an airport don’t use free, non-password, and encrypted Wi-Fi.

10. Change your passwords regularly.

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