What are Computer?Viruses?

A computer virus is malware (malicious software) that can replicate itself and spread from one computer to another. The term “virus” is also commonly but erroneously used to refer to other types of malware, including the very common trojans and worms.

All viruses are self-replicating computer programs that attach themselves to some form of executable content it could be a document, an application program such as Microsoft Word or Excel, or even boot sectors (Master Boot Record, Volume Boot Record). When the host software is started, the virus code is executed along with it.

Five main families of Computer?viruses:

? Boot sector viruses infect the boot sectors of floppy disks and hard drives.

? File or program viruses infect files and programs in executable files, such as those found in the AUTOEXEC.BAT and CONFIG.SYS files are used for booting a computer, or in other non-executable files such as word processor documents. Read in Detail