TYPE OF MALICIOUS CODE

Viruses: pieces of code that attach to host programs and propagate when an infected program executes 

Worms: particular to networked computers, carry out pre-programmed attacks to jump across the network

Trojan Horses: hide malicious intent inside a host program that appears to do something useful 

 Attack scripts: programs written by experts to exploit security weaknesses, usually across the network

Java attack applets: programs embedded in Web pages that gain foothold through a browser

ActiveX controls: program components that allow malicious code fragment to control applications or the OS