INTRODUCTION To Computer Viruses:
A computer virus is a type of malicious software that is specifically designed to replicate itself and spread from one computer to another. Viruses can be transmitted through email attachments, infected software downloads, or by being transferred from an infected device to a clean device via a removable drive or network.
When a virus infects a computer, it can cause a variety of problems, such as slowing down the system, corrupting data, or displaying unwanted messages or ads. Some viruses are designed to steal sensitive information, such as login credentials or financial data, while others are designed to cause damage to the system or disrupt its normal functioning.
Viruses can be classified into different types based on their characteristics and behavior. Some common types of viruses include:
Resident viruses: Resident viruses remain in the computer's memory and can infect other files as they are accessed.
Direct action viruses: Direct action viruses infect specific types of files and are activated when the infected file is accessed.
Overwrite viruses: Overwrite viruses replace the contents of a file with the virus code, rendering the original file useless.
Boot sector viruses: Boot sector viruses infect the boot sector of a hard drive or disk, making it difficult to start up the computer.
Polymorphic viruses: Polymorphic viruses are designed to change their appearance to evade detection by antivirus software.
To protect against viruses, it is important to install and regularly update antivirus software on your computer. It is also important to be cautious when opening email attachments or downloading software, and to avoid visiting unknown or untrustworthy websites. If you suspect that your computer may be infected with a virus, you can try running a scan with your antivirus program or seek the help of a professional.
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