What is An Antivirus Software?

Antivirus software is a program that identifies a virus in your system, if possible, it repairs the damaged files and it also eliminates that virus from your system. There are a variety of antiviruses available that provide security to your system. Once you install the antivirus on your system it runs in the background of your system and it continuously provides real-time protection to your computer from virus attacks.

Antivirus is essential software for devices that are connected to the internet. The Internet is the most common source that can introduce viruses to your system. Let us proceed and try to understand the working, need, and types of antivirus along with its benefits.

Antivirus Software

  1. What is an Antivirus Program?
  2. How Does an Antivirus Work?
  3. Types of Antiviruses?
  4. Why Do You Need Antivirus?
  5. Benefits of Antivirus
  6. Examples of Antivirus

What is an Antivirus Program?

We can define antivirus as a set of programs that protect your computer from external threats such as virus attacks. The antivirus is installed on the computer and it runs in the background of your system and performs a real-time scan.What is Antivirus

If the antivirus detects any kind of threat in your computer it displays an alert asking you whether the detected virus should be repaired or eliminated from your computer.

How Does an Antivirus Software Work?

Antivirus is a program that you have to install on the computer. Once installed it runs in the background of your system and perform a real-time scan to detect virus present in your system.

Identify bug

Now you must be thinking about how an antivirus detects viruses from your system. Actually, each antivirus has its own database that has signatures of all the viruses that have evolved till now. When an antivirus runs in the background of your system it matches each file present in your system with its database.

If any of the files in the system matches with the database of antivirus then it marks it as a virus or damaged file. If possible, the antivirus repairs that damaged file, and if not, the antivirus deletes that file from your system.

eliminate antivirus

Now we know that viruses keep on evolving, in that case, a database of antivirus must also be updated frequently. This is why antivirus must be updated frequently.

Types of Antiviruses

Whenever you are planning to set up an antivirus for your system you must have knowledge of the types of antivirus programs available.

1. Malware Signature Antivirus

Malware signature antivirus is a kind of antivirus that detects viruses in your computer with the help of their signature. Each virus has its digital fingerprint. So, the malware signature antivirus maintains a database that stores the digital signature of the viruses that evolved till now.

Now the malware signature antivirus scans your system and detects specific malware’s digital signature. And it is able to disable this malware.

But this kind of antivirus does not have the ability to address new viruses and it can identify those viruses whose digital fingerprint it has in its database.

2. System Monitoring Antivirus

The system monitoring antivirus monitors the behavior of its user and when it suspects a change in the behavior of its user it immediately creates an alert. The change in the behavior could attempt to access a large number of files or a significant increase in data usage.

3. Machine Learning Antivirus

The machine learning antivirus identifies the viruses in your computer without relying on the digital signatures of the viruses. This antivirus is designed to recognize the signs of a normal and a malicious file. This helps machine-learning antivirus to identify malicious patterns and detect malware.

Why Do You Need Antivirus?

Nowadays the entire world is going digital. All enterprises, organizations, companies, and even single users store their data digitally. We have to protect these digital assets against malware. But this has become a challenge due to the enormous amount and diversity of emerging threats.

There are cyber criminals who keep on searching for million-dollar companies, find ways to commit fraud, cause damage to your important files or find ways to break into your computer.

Cyber Criminals

Antivirus prevents all such kinds of attacks. Although it is not possible for any antivirus to prevent all kinds of cyber attacks but still it prevents a maximum of them.

Benefits of Antivirus

  1. Every antivirus is designed to identify, repair, and remove viruses and other malicious programs from your computer.
  2. It provides protection from viruses and also prevents their spreading.
  3. Antivirus also blocks spam messages and ads that can introduce viruses to your system.
  4. Antivirus also prevents hackers from breaking into your system and stealing your important data.
  5. The antivirus also provides protection against portable devices that are also a source of introducing viruses into your computer.
  6. It secures data and files present on your system.
  7. The antivirus limits access to websites that can infect your system thereby enhancing web protection.
  8. Protecting your system from malicious programs is a cost-effective method.


Examples of Antivirus

  • Avast
  • Norton
  • McAfee
  • Kaspersky
  • Bit Defender Total Protection

With all this, I want to conclude that antivirus is essential software that every computer must have. You must update your software on a regular basis as it helps the antivirus to update its database with the information of the newly evolved viruses.

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