If you are a computer user, you must have heard about viruses and antivirus. Virus is a malicious software that can damage your computer system, delete your files, and steal your personal information. Antivirus is a software that can detect and remove viruses from your computer system. In this article, we will discuss what virus and antivirus are in computer PDF.
What is a Virus?
A virus is a type of malicious software that can infect your computer system and cause damage. It can spread from one computer to another through email attachments, infected websites, and removable devices such as USB drives. Once a virus infects your computer, it can replicate and spread to other files and programs on your computer.
Some common types of viruses are:
- File infectors
- Boot sector viruses
- Macro viruses
- Worms
- Trojan horses
- Spyware
- Adware
What is Antivirus Software?
Antivirus software is a program that can detect and remove viruses from your computer system. It can scan your computer system for viruses and quarantine or delete them. Some antivirus software can also provide real-time protection by monitoring your computer system for any suspicious activity.
Some popular antivirus software are:
- Norton Antivirus
- McAfee Antivirus
- Avast Antivirus
- AVG Antivirus
- Kaspersky Antivirus
- Bitdefender Antivirus
How Does Antivirus Software Work?
Antivirus software works by using various techniques to detect and remove viruses from your computer system. Some common techniques are:
- Signature-based detection: This technique compares the files on your computer system with a database of known viruses and removes them if they match.
- Heuristic analysis: This technique looks for suspicious behavior on your computer system and removes any files or programs that exhibit such behavior.
- Behavioral analysis: This technique monitors the behavior of programs running on your computer system and removes any programs that exhibit malicious behavior.
How to Install Antivirus Software?
To install antivirus software, follow these steps:
- Download the antivirus software from the official website of the software provider.
- Run the downloaded file and follow the on-screen instructions to install the software.
- Activate the software by entering the license key provided by the software provider.
- Update the antivirus software to the latest version to ensure that it can detect and remove the latest viruses.
How to Use Antivirus Software?
To use antivirus software, follow these steps:
- Open the antivirus software.
- Select the type of scan you want to perform, such as a quick scan or a full system scan.
- Start the scan and wait for it to complete.
- If any viruses are detected, quarantine or delete them.
- Repeat the scan periodically to ensure that your computer system remains virus-free.
Conclusion
In conclusion, virus and antivirus are important concepts that every computer user should be aware of. Virus is a malicious software that can damage your computer system, while antivirus is a software that can detect and remove viruses from your computer system. By following the steps mentioned in this article, you can protect your computer system from viruses and ensure that it remains secure.
