What is a computer virus definition?

In more technical terms, a computer virus is a type of malicious code or program written to alter the way a computer operates and is designed to spread from one computer to another. A virus operates by inserting or attaching itself to a legitimate program or document that supports macros in order to execute its code.

What is computer virus and its types?

Web Scripting Virus: This type of computer virus will exploit the web browser and web page codes. Resident Virus: It is a general term for any virus residing in the computer memory. Polymorphic Virus: This virus changes its code every time a file infected with a virus is executed.

What is a computer virus and why is it called a virus?

The metaphor of the “computer virus” was adopted because of the similarity in form, function and consequence with biological viruses that attack the human system. Computer viruses can insert themselves in another program, taking over control or adversely affecting the function of the program.

What is computer virus history?

The first computer virus, called “Creeper system”, was an experimental self-replicating virus released in 1971. It was filling up the hard drive until a computer could not operate any further. This virus was created by BBN technologies in the US. The first computer virus for MS-DOS was “Brain” and was released in 1986.

What kind of virus is in Microsoft PowerPoint?

Computer virus (Microsoft Powerpoint) Viruses A computer virus is a program, a block of executable code, which attach itself to, overwrite or otherwise replace another program in order to reproduce itself without a knowledge of a PC user. There are a couple of different types of computer viruses: boot sector viruses, parasitic viruses,…

What is the definition of a computer virus?

Computer virus (Microsoft Powerpoint) 1. Name : SITI AINIZ BINTI BAHARI Class : 4 ISWARA. 2.       Computer viruses are small software programs that are designed to spread from one computer to another and to interfere with computer operation.

What kind of virus can I get on my computer?

6. Program Virus  These viruses infect program files, which have extensions such as .COM,.EXE.,SYS.,DLL,.OVL, or .SCR. program files are attractive targets for computer virus because they are widely used and have relativity, simple formats to which viruses can attach themselves. 7. Macro Viruses  These viruses infects data files.

How does an anti virus work on a computer?

An anti-virus is a software which comprises programs or set of programs which can detect and remove all the harmful and malicious software from your device. This anti-virus software is designed in a manner that they can search through the files in a computer and determine the files which are heavy or mildly infected by a virus.