computer virus is a malicious software program which is written intentionally to enter a computer without th user's permission. A computer virus continuously spreads by replicating itself. When a file infected with virus is opened, the virus infects other files on the system and also spreads to other systems in network with the help of infected files. Viruses damage the system by deleting files on the system, incresing file sizes or automatically formatting the system. There are different types of viruses which affect a computer differently.
- Boot Viruses
- Polymorphic Viruses
- Macro Viruses
- Worms
- Trojans
- Adware
- Spywares
- Malware : Types of malware include:
- Computer Viruses
- Computer Worms
- Trojan horses
- Logic bombs
- spyware
- Adware
- Spam
- Popups
