The Internet has penetrated in every walk of education, business, commerce, governance, health, recreation and social interaction. In an increasingly interconnected world, protecting the integrity of the network becomes an essential function of the user if its assets have to be protected. Just as assets of the brick and mortar world need security from theft, defacement, destruction, hijacking, etc., so do the assets connected with the virtual world. In fact, the computer network is used to commit crimes in the physical world. It is therefore Cyber Security becomes paramount importance for any user.