What is Virus and its types?
Virus is stands for Vital Information Resource Under Seize. It is a malicious program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes.
A computer virus might corrupt or delete data on a computer.Viruses can also replicate themselves.
A computer virus might corrupt or delete data on a computer.Viruses can also replicate themselves.
Types of Viruses
Based on the working and the ability of doing infection,viruses are categorized into several types such as:
- Resident Virus:A type of virus that infects the whole memory area of the RAM is called as resident virus.
- Boot Virus: Boot virus is the type of virus that spread the virus in bootable part of the hard drive.
- Direct Action Viruses:The main purpose of this virus is to replicate and take action when it is executed.
- Overwrite Viruses:It deletes the information contained in the files that it infects, rendering them partially or totally useless once they have been infected.
- Overwrite Viruses:Directory Viruses change the paths that indicate the location of a file.
- File Infectors:This type of virus infects programs or executable files(files with an .EXE or .COM extension)
- FAT Virus:The file alloaction table or FAT is a vital part of the normal functioning of the computer.
- Worms:A worm is a program very similar to a virus.It has the ability to self-replicate,and can lead to negative effects on your system and most importantly they are detected and eliminated by anti-virus.
- Trojans or Trojan Horses:A Trojan horse is a malicious software programs.
- Spyware:Spyware can install on your computer without your knowledge.These programs can change your computer's configuration or collect advertising data and personal information.