![Picture](/uploads/5/9/9/0/59905587/4567222_orig.jpg)
Worm:It is the action that cause loss of or damage to a computer system.
![Picture](/uploads/5/9/9/0/59905587/491990_orig.png)
Virus: It is a computer program that copy itself and it cause computer to malfunction.
![Picture](/uploads/5/9/9/0/59905587/5629394_orig.jpg)
Trojan Horse: it is a computer program that disguised as a game, utility software, or something useful.
![Picture](/uploads/5/9/9/0/59905587/1966785_orig.jpg)
Spam: it is a unsolicited email sent by an unknown sender.
![Picture](http://www.editmysite.com/editor/images/na.png)
Phishing: it is the act of extracting personal information
![Picture](http://www.editmysite.com/editor/images/na.png)
Hacker
![Picture](http://www.editmysite.com/editor/images/na.png)
Spyware