Question

Describe each types of computer virus

Answer 1

Computer viruses come in different forms, and the most common infections are:

Boot Sector Virus

Direct Action Virus

Resident Virus

Multipartite Virus

Polymorphic Virus

Overwrite Virus

Spacefiller Virus

File Infector Virus

Boot Sector Virus –

The Boot Sector virus infects the master boot record, and it mostly spreads through the removable media. It is a complex task to remove this virus and often requires the system to be formatted.

Direct Action Virus –

The Direct-Action Virus remains dormant on a computer until the file containing the virus is executed.

Resident Virus –

The Resident Virus inserts itself in a computer system’s memory. It is hard to identify the virus, and it is equally tough to remove it.

Multipartite Virus –

The Multipartite Virus infects and spreads in multiple ways. This virus infects both the program files and the system sectors.

Polymorphic Virus –

A Polymorphic Virus is more capable of altering its signature pattern whenever it replicates thereby rendering it hard to be detected.

Overwrite Virus –

As the name suggests, an Overwrite Virus spreads through emails and deletes all the files it infects.

Spacefiller Virus –

The Spacefiller Virus is also known as Cavity Virus; it occupies the empty spaces between the codes. It does not harm the files.

File Infector Virus –

A File Infector Virus is also known as Parasitic Virus because it comes attached to program files, such as .COM or .EXE files. The best way to detect file infector viruses is to use virus detector software.