Full Form of Virus

A Vital Information Resources Under Seize or computer virus is a computer program or a piece of code that is loaded onto your computer without your knowledge and run against your consent. The virus then spreads by replicating itself from one computer to another computer. The data files can be affected by it, also the boot sector of the hard drive and much other software of your computer system.

Did you know that Viruses are human-made programs? They are generally written to get access to private information, to display political and humorous messages on the user's screen and to corrupt data. They would generally insert themselves into host programs and then spread on the execution of infected programs.

The damage caused by computer viruses could go up to billions of dollars every year. The Microsoft running operating systems are targeted more often than others. Programmers created anti-virus programs to counter these viruses.

How Viruses Affect Your System?

• The system file could be corrupted, thus slowing down your computer system.
• The programs could become corrupt or faulty.
• The computer's boot sector could be damaged.
• All the information could be stolen from your computer and sent to some other person.
• Your complete hard drive could be deleted.
• Irrelevant and very disturbing messages could be displayed on your computer screen.

Disadvantages of Computer Virus:

1. Virus can crash window
2. Virus can remove window files due to this the computer system slow down.
3. Viruses can stole the valuable data of your computer.
4. Due to some virus the hardware of computer system can not work properly
5. Virus can disable some of your operating system settings
6. Virus programs are really the savior of all those whose lives are totally machine dependent.
7. Virus can display pop up ads on computer desktop.
8. Virus can hacks important files.
9. Virus can gains control over applications and starts functioning its own starts behind screen.
10. irus can Generate instability in performance

Viruses: Types

Here is a list of the most common type of computer viruses:

1. Boot sector viruses
2. Browser hijacker
3. Resident viruses
4. File infector viruses
5. Polymorphic viruses
6. Active X viruses
7. Program viruses
8. Multipartite viruses
9. Stealth viruses
10. Macro viruses

This is the list of malware which might be categorized as computer viruses:

• Computer Worms
• Zombies
• Spam virus
• Trojan horse
• Spyware