Network security: Risk assessment of information systems

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Title: Network security: Risk assessment of information systems
Author: Lurain, Sher
Abstract: This paper investigates fundamental security issues and the growing impact of security breaches on computer networks. Cost-effective security measures, such as asset-threat analysis, enable monitoring of security levels in complex systems. An evaluation of one technique, called the Livermore Risk Analysis Methodology (LRAM) is documentedC 1 ] . Untrusted communication lines, unauthorized access and unauthorized dissemination of information must be contained. The complexity and corresponding sophistication of todays' systems and the reliance of management on information generated by these systems make them attractive targets for computer related crimes. A profile of computer criminals and their crimes emphasize the importance of management involvement and social ethics as determents to crime. An overview of system security, control concepts, communication and transmission security, and a discussion of threats, vulnerabilities, and countermeasures is provided. The growing need for risk management models is presented as well as an overview of LRAM. Risk assessment of a specific system case study and risk profiles are developed using LRAM.
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Date: 1990

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