Computer Viruses

1 . Definition of Computer Viruses

A computer virus is a computer program that duplicate or replicate by inserting a copy or copies of itself into the storage media / documents into the network and secretly without the knowledge of the computer user . The effects of computer viruses range from just appears strange messages to damage the computer and delete files or documents we .

2 . Meaning Definition / Definition of Virus Variants Worm , Trojan and Spyware

a. worm

Worm is a security hole or slit weakness on our computer that allows your computer infected with viruses without having to execute a file that usually occurs on the network .

b . Trojan

Trojan is a program that allows computer controlled others through a network or the Internet .

c . spyware

Spyware is an application that is leaking information data or user behavior in the habit of using the computer to outside parties without our knowing it . Usually used by a party advertisers .

If we see any discrepancy in the storage media such as a file called strange that we never created or the file is not the type of application / application but admitted as an application then do we click , we go or we run that computer viruses are not transmitted to the computers we use .

Characteristics of Computer Affected / Infected Computer Viruses :

- The computer is running slower than normal

- Often out error messages or odd - odd

- Change the display on computer

- Storage media such as floppy disks , flash , and so strange without directly copying   the files we copied when we plug it into the computer .

- The computer likes to restart itself or crashes while it is running .

- Like it or text message weird

- The computer hangs or stops responding to us .

- Hard disk can not be accessed

- Printers and other devices can not be used even if there are no hardware problems and software drivers.

- There is often a menu or dialog box error or damaged .

- The loss of some of the basic functions of the computer .

- The computer attempts to connect themselves to the Internet or a network without our order .

- The file that we save on your computer or storage media go away or hidden viruses . and others