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Computer viruses: They are small programs intended to spread from one computer to another

Its goal: to interfere with the operation of the computer, and the presence of this virus may cause data corruption or delete it from your computer, or it may cause the erasure of everything on your hard disk.

Computer viruses: They are small programs intended to spread from one computer to another

Its goal: to interfere with the operation of the computer, and the presence of this virus may cause data corruption or delete it from your computer, or it may cause the erasure of everything on your hard disk.

Computer viruses are spread by attachments that are sent to the e-mail or through instant messaging messages. Therefore, you should not open e-mail attachments altogether if you do not know who sent them, and viruses may hide funny picture attachments, greeting cards, video files, and pictures. Many viruses spread through downloads that are found on the Internet and maybe hidden in illegal programs, files, or some programs when they are downloaded.

Think if you have a biological virus and this makes you sick because it prevents you from functioning normally and often you will need a powerful command to get rid of it, and this is very similar to a computer virus as these viruses are designed to replicate relentlessly because they infect your programs and files on the computer as well. Change or turn off the computer. Some estimates indicated that a virus-infected more than 10 million computers in 2009, and at present, there are many computer viruses on the Internet, and every day new computer viruses are discovered.

The most dangerous types of computer viruses at present are as follows:

• Patches (Trojans)

It is a small program and it may be integrated into another file to hide when a person downloads it and when you open it, it will infect the registry and open ports on your computer and this makes your device vulnerable to penetration and it is one of the smartest programs.

•  Multipartite Virus

These viruses infect your driver files and are extremely widespread.

•  Polymorphic virus

These viruses are very difficult for resistance programs, as it is difficult to catch them, and they change from one device to another in their commands, but they are written in a non-technical way and therefore it is easy to remove them.

•  Macro Virus

These viruses are very common and they hit office programs and write in Word or Notepad.

• Boot Sector Virus

This virus is active in the operating system area and is one of the most dangerous types of viruses as it prevents you from operating your computer.

•  Stealth Virus

It is trying to hide from anti-virus software but from being caught.

•  File Virus

These viruses spread in files and when you open any file they spread greatly.