Computer Security

Abstract

Computer security is an area that is growing in importance as more business applications are being automated and more vital and sensitive information is being stored in computers. Almost daily one can read newspaper accounts of computer abuse. Stealing information from a computer is just like stealing goods from a warehouse, for information is a commodity. The primary difference is that the loss of information often goes unnoticed. The term computer security means the protection of resources (including data and programs) from unauthorized disclosure, modification, or destruction. In addition, the system resources must also be protected (i.e., access to system services should not be denied). These computer security properties are usually referred to as confidentiality , integrity , and availability . More precisely: Confidentiality ensures that sensitive information is not disclosed to unauthorized recipients. Integrity ensures that data and programs are modified or destroyed only in a specified and authorized manner. Availability ensures that the resources of the system will be usable whenever they are needed by an authorized user. The degree to which each of these three properties is needed varies from application to application and are discussed.

Intrusion detection and response model for mobile ad hoc networks.

“…Intrusion detection is the process of detecting and responding to malicious activity that is aimed at attacking the network [24,25]. Several techniques for detecting intrusions have been studied [56,75,79]. Network firewalls often implement security policies at the front-end to protect computers from malicious attacks [33].…”