Computers & Electronics

What is Computer Virus? It’s symptoms and how to be prevention it?

How many times has it happened to you that once you download from a certain website, a certain link, all of a sudden your computer starts to act weirdly..!!!??

It is because your computer got attacked by viruses.

By now, you must have realized what is the topic of the article is. Yes, you guessed it right, it is about Computer Virus.

If you don’t want to lose your personal information, precious files, data, and most importantly your peace of mind, then you better take some preventive actions!

If you are unaware of the spread-out realm of a computer virus, & currently dealing with such a scenario and having mental breakdown simultaneously, then this article is for you.

In this article, we will talk about the types of a computer virus, its symptoms, and how to take action against it.

Read on to know more.

What is a Computer Virus?

Just like we humans get infected by the flu viruses and various others, similarly, our computers are prone to get infected by viruses and malware.

The computer virus is powerless; it cannot infect your computer on its own. But once it infects the certain executable files or software, it starts cloning itself onto the infected files or software.

Now when those infected programs and files are opened, then the computer virus spreads out onto the operating system and starts infecting the entire computer system.

Type Of Virus

Type Of Virus

There are innumerable kinds of computer virus exists out there. Each one is designed to operate differently, but with the same motive – doing nothing useful but harm.

Let’s have a peek at some of them.

1. Malicious Codes:

Malicious code or malicious software is a broad term of the computer virus. It is not necessary that the malicious code has to be computer virus; it could also be Trojan horse, worms, logic bombs, spyware, backdoor program, adware. All of these can and do cause potential disturbance to the computer system. Some malicious codes can be a virus code and a Trojan at the same time.

2. Polymorphic Virus:

This kind of virus is the ultimate playboy of the computer virus. As the name suggests, this virus can modify or ‘morph’ its outlook several times while invading the operating system in the same manner. A polymorphic virus is extremely hard to detect by the conventional security program because of its dynamic nature.

3. Macro virus:     

Macro virus or a Mac virus is another type of menacing computer virus that circulates via a software program that uses a macro. In other words, this naive looking virus is written in the ditto macro language which is also used for some specific software applications, namely- Microsoft Word, Microsoft Excel. It is also tough to identify this virus because it is often hidden inside a harmless document.

4. Resident Virus:

It is a kind of computer virus that buries itself within the system’s memory, further allowing the computer memory to corrupt other files. It does not need the original infected file or program to do its work. A resident virus often attaches itself to the antivirus program which makes it very hard to fight against it.

5. Boot Sector Virus:  

This one is kind of a dreaded computer virus that carries out its works by infecting the boot sector or the storage device’s Master Boot Record(MBR). These viruses are spread via inflected physical media.

Symptoms of Virus Infected Computer

Symptoms of Virus Infected Computer

1. Sluggish Operating Pace:  

Probably the most common symptom of computer virus infection is that the computer system slowing down overall. Internet speed becomes poor. Any processing done on a computer starts becoming very time-consuming.

2. Abrupt Computer Performance:

The computer starts behaving unexpectedly. It does the thing on its own such as opening files, scrolling up and down, or sometimes stops responding to the given commands.

3. Technical Error:  

The computer virus infects the operating system and eventually causing an untimely technical error. The computer freezes very often, the operating system crash down, preventing the system from coming back to its previous form.

4. Low Storage Space:

Another surefire sign that your computer might be infected is when the system starts running out of storage space time and again.

5. Annoying Pop-Ups:

Unwanted pop-up windows are not only really annoying but also give out the signal that the computer might be infected. Sometimes these pop-up windows also come with a message, ‘a virus has been detected’, coaxing the user to click on it and take further actions. But the advice here is to never click on such things.

6. The threat to Security:

Some computer viruses are designed to pose a threat and corrupt the antivirus systems. These nasty viruses stop and disable the antivirus software to do its job.

7. Missing Files:

If your computer suddenly loses some really important files or some extra gibberish, suspicious files are found on your computer; know that your computer is under attack.

8. Email Attachments:

Viruses often piggyback through email attachments. If one suddenly finds some weird suspicious sent mails from his own computer or receives some dicey mails, 90% chances are the email attachments are the computer virus. Never click on such attachments.

If one finds any of these above-mentioned activities in his computer system, the tip is to take precautions and use preventive methods immediately.

Prevention of Computer Virus

Prevention of Computer Virus

1. Steer Away From Dubious Programs:

Do not visit suspicious websites, be very cautious about the links you are clicking on.

2. Scan:

Scan anything and everything, whether it is newly installed software or a received mail, scan them to know whether they are threatful to the computer system. It is advisable to scan your computer weekly to get rid of any hidden malware.

3. Update:    

Updating the operating system regularly will lessen the chance of getting infected by an alarming computer virus.

6. Antivirus Program:

Using antivirus programs is a must. It is a tool that helps to guard your computers against potential threats. One thing to keep in mind while downloading antivirus software is that make sure the website is trusted.

7. Trusted Site:

Make trusted sites your best friend. Use trusted sites only while downloading any kind of software.

Final Word

In these modern days, where everything is connected via the web of the internet, it is advisable to have proper knowledge about computer virus and know how to prevent them.

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Priyanka Koley

An aquarian dreamer. Voracious reader. Articulate writer.

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