Immune system is essential to human body as it protects our bodies from pathogens in an orchestrated manner. From a computational viewpoint, the immune system has much to offer by way of inspiration. Recently, there has been growing interest in the use of natural immune system as inspiration for the creation novel approaches to computational problem. This field of research is referred as Immunological Computation or Artificial Immune System. The use of artificial system computer security is an appealing concept for two reasons. Firstly, the human immune system provides human body with a high level protection from invading pathogens in robust manner. Secondly, current techniques used in computer security are not able to cope with the dynamic and increasingly complex nature of computer systems and their security. This paper introduces the concept of apoptosis for computer security. This term is borrowed from cell biology and designates the programmed cell death.

This paper discusses on the enhancement of the current Intrusion Defection System (IDS) based on Artificial Immune System called apoptosis. Nowadays network systems are required to be more secured since the virus is now growing stronger and more dangerous. Unfortunately, not all of the Intrusion Detection System (IDS) is effective enough to defend against viruses entering the network. In this paper, the researchers' propose a new enhanced IDS system that will defend the computer system from being attacked by viruses. By using apoptosis system as the basis of the enhancement, these IDS will work similar to the human defence system and solve the problem of the virus infection in the computer system. In addition, the researchers' have also improved the accuracy of IDS for detecting the virus by using this method.