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virus

Virus: It is a computer program that is prepared to cause damage to the hardware and software components of the computer without the user's knowledge. Viruses change the way the computer works, or often completely disable it.

Computer viruses have spread in the world and their number has reached tens of thousands, and they have the ability to copy themselves and move themselves from one computer to another, and for this reason they are called viruses due to their resemblance to living (organic) viruses in reproduction.

It also has the ability to change the programs on the broken computer and cause a defect in it, which makes it unable to perform its function and it may come to delete it completely, and the virus usually activates when trying to run the broken program, as it can disappear inside the computer for a period of time and then start working after The expiration of the time period specified in its programming.

Symptoms of virus presence inside the computer

Increasing the time it takes for some computer operations, such as running programs and accessing storage disks.
Unexpected messages appear from the operating system, such as messages indicating that USB flash drives are in use when they are not.
Low storage capacity of both disks and main memory for no apparent reason.
Sometimes files and programs disappear and their sizes change.
Some programs crash and do not respond to mouse and keyboard clicks.

ways of transmission of the virus

Using disks (optical, floppy, and compressed) and virus-infected flash drives on a computer.
Virus transmission when files are received through e-mail, as they are transmitted to the system.

Virus prevention methods

Use anti-virus software and keep it updated, for example: Norton Antivirus- McAfee Virus Scan- NOD32 Antivirus.
Do not use storage disks without making sure that they are virus-free, and this is done by examining them using anti-virus programs.
Do not open an e-mail of unknown origin without making sure that it is virus-free, by examining it using anti-virus software.
Store a backup copy of important data on external storage disks, to re-store them on the computer in case viruses damage this data.

Ways to remove the virus automatically

Using an anti-virus program, which is one of the most used methods to remove viruses, is to close all running programs and applications.
Clean and wipe the computer well, then run the scan service.
Know the threat and work to remove it.
Re-activate the antivirus and security software, then the virus will be detected and removed.