Things to know about computer viruses and how to protect your computer from it

What is a computer virus?

A computer virus is like a flu virus found in human beings. It can infect one computer and then spread like wildfire when triggered. A computer virus needs a host to be able to replicate and spread. It comes in a form of a file, a malicious program or code which is engineered to infect and modify the way computers work.

What are the common types of computer viruses?

Computer viruses constantly grow and evolve. It’s challenging to provide a comprehensive list as new types and mutations surface almost every day. However, here are some of the most popular types of computer viruses.

Boot Virus

This virus attacks the floppy disk or hard drive. It resides in the boot sector and prevents your computer from starting.

Macro Irus

This virus targets applications and programs which contains macros. Microsoft Word and other Word documents are particularly vulnerable to this type.

File Infection Virus

This type attacks files with an.EXE or.COM extension. Once an infected file is run, the user can experience a devastating damage.

FAT Virus

It resides in the file allocation table of the hard drive. This virus will make it impossible for you to access your files on the disk. Worse, your important data can be wiped out completely.

Trojans and Worms

Though these viruses do not replicate, these malicious codes can inflict severe damages to a computer. They usually conceal code within a useful application. They can also be programmed to launch.

Stealth Virus

This type is such a dangerous one as it can outsmart some antivirus software. The codes can fool and intervene with the operating system of the common antivirus programs.

Directory Virus

This type can change the path where your files are located. It can easily make you an unaware accomplice.

Polymorphic Virus

This type encrypts itself with diverse algorithm keys every time it infects and alters a computer system.

Overwrite Virus

This type can make your original files useless as it has the power to overwrite or remove the content of the file it infects.

Resident Virus

This type resides and attacks your RAM. It can corrupt your files, your systems, and all the corresponding operations in your computer.

Aside from the dangerous viruses, there are other types of computer infections that are severely affecting not only the users in India but the rest of the world as well. While they can’t be classified as viruses, they still have the power to threaten your security and inflict damage to your computer and data.

What are these malicious computer programs?


This software of application is engineered to gather information from your computer without your knowledge and consent. The acquired data will then be sent to a third party to be used for illegal purposes. Usually, it steals your PINS, credit card numbers, passwords, browser history, email contacts, and keystrokes.


This software has the power to download advertising by connecting constantly to the Internet. There are other users who install adware for the purpose of getting a software product for free. However, the user must allow ads to be displayed all the time.


This malicious program has the ability to control your files and your systems. They will be held hostage until you decide to pay a fee as a sort of ransom, hence the name of this program.


From the word malicious and software combined, this type of infection is designed to inflict damage to your computer systems and to expose your important and sensitive data.

Stay away from all the viruses with a good antivirus software! 

Antivirus software are programs that help protect your computer against all viruses, worms, trojans, and other unwanted invaders that are making your computer “sick.”

For your peace of mind, Motherboard highly recommends ESET, currently the leading anti-virus software in the Irish market.

This cutting-edge software detects and disables viruses, trojans, worms, adware, spyware, phishing, rootkits and other internet threats – and has a far better detection rate than other similar software offerings.

A great asset with this software is that it has an extremely small system footprint, meaning that users of ESET will not experience a slowdown when running this program!

Updates for the program and the virus signature files are downloaded automatically to keep your antivirus up to date.

If you do not have an antivirus yet or the one you are using is too expensive or just not effective enough, then give us a call at (01) 4975562 and ask us to quote you for supply and install. Prices are competitive, detection is comprehensive, and the speed of your system is not compromised.

Source: 5 Best Things

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